Powertrain
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GM Celebrates One-Millionth Duramax Diesel DAYTON, Ohio – General Motors Corp. (GM) announced today the production of its one-millionth Duramax V-8 turbo-diesel engine at the DMAX plant in Moraine. DMAX Ltd., a joint venture between GM and Isuzu Motors Limited, was established as a diesel engine company in 1998. GM first introduced the Duramax diesel in the U.S. in the 2001 model year and since then, customer enthusiasm for this heavy duty diesel has been outstanding. In fact, GM’s heavy duty diesel pickup market share has jumped nearly tenfold in the six years that Duramax engines have been offered. “Our Duramax diesel is one of the best in the industry,” said John…
Last reply by 76ChevyTrucker, -
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And since I'm on a oil kick, I figured I'd ask the question: What do you think the factory fill for that 1.4 turbo is going to be Mobil 1?
Last reply by vonVeezelsnider, -
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The 1.8 Ecotec XFE is a concept centered around building the most most fuel efficient engine that will deliver 140hp -- the approximate baseline requirement for a FWD compact car in the same size class as the Cruze, Civic and Corolla. Basic Design Type: Inline-3 w/counter rotating balance shaft Aspiration: Naturally Aspirated w/Part Time Atkinson Cycle operation Construction: Aluminum Block and Heads Displacement: 1788 cc (109 cu-in) Bore x Stroke: 88 x 98 mm Bore Center: 96 mm Valvetrain: Chain Driven SOHC 4-valve per cylinder (2 x concentric camshafts) Fuel Injection: Direct Gasoline Injection Compression Ratio: 11.2:1 (7.5:1 in Atkinson mode) Pow…
Last reply by dwightlooi, -
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The 2.0 Liter LNF is a nice little engine in turbocharged form. But as a base engine on a small car like the upcoming Cruze it may not exactly be the right prescription. However, the 2.0 liter block can form the basis of a nice little engine designed for economy instead of performance. And one of the ways we can optimize it for gas sipping duty is to incorporate Part-Time Atkinson Cycle operation using cam switching hardware already tested on the HCCI concept 2.2 engines. Since the engine block and most components are shared with the LNF it also reduces costs and inventory if the vehicle will also have a turbocharged high performance stable mate. Atkinson Cycle (and i…
Last reply by dwightlooi, -
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What's worse than a bad product is an undifferentiated product. So, here's an idea for an engine which is not currently available from GM's competitors... Type: 2.0 liter reverse flow 60-degree V6 Valvetrain: DOHC 4-valves per cylinder, Intake & Exhaust VVT Construction: Iron Block, Aluminum Heads Balance Shaft(s): One Fuel Injection: Common Rail Direct Gasoline Injection Bore x Stroke: 72.5 x 82.6 mm (Same as 1.4T) Bore Center: 82 mm Displacement: 2046 cc Compression Ratio: 9.3:1 Aspiration: Turbocharged and Intercooled; 1 x Garrett MGT22 Turbocharger Fuel Type: 87 Octane Unleaded Gasoline Power Output: 250 bhp @ 5000 rpm Torque Output: 270 lb-ft @ 1800~…
Last reply by regfootball, -
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when the improved 2.2L is supposed to be used in the 09 'balt, other than the g5 (if it's alive), will this engine be in more vehicles than delta immediately? hopefully it makes good numbers, and if BAS is still used, will be used instead of the 2.4L to get another point or 2 in combined mileage. anymore info on this topic?
Last reply by Dsuupr, -
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Are the improvments made to this engine specific to the Malibu or do all GM cars using this engine have the improvements too? Just wondering.
Last reply by avro206, -
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Larger-Displacement 2.9L and 3.7L Vortec Inline Engines Deliver More Power PONTIAC, Mich. - For the 2007 model year, GM's popular midsize trucks - Chevrolet Colorado and GMC Canyon - as well as the HUMMER H3 SUV, feature new, larger-displacement inline four- and five-cylinder engines. The new Vortec 2.9L I-4 and Vortec 3.7L I-5 deliver more horsepower and torque than the engines they replace, giving the vehicles increased performance. The Vortec 2.9L DOHC four-cylinder with variable valve timing (VVT) replaces the previous 2.8L four-cylinder and delivers 185 horsepower (138 kW) and 190 lb.-ft. of torque (258 Nm).* The Vortec 3.7L DOHC five-cylinder with VVT replaces t…
Last reply by Derek77, -
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I have a 2000 Pontiac Montana and a few weeks ago my transmission (4T65E) failed so I replaced it with a transmission out of a 2003 Pontiac Aztec. As far as I can tell the final drive / gear ratios are the same, but I could be mistaken. I am getting a fault code of P1810 (TFP position sensor) from the PCM and it is also getting torque lockup occasionally. Apparently sometime in 2002 the TFP assembly was updated (TSB #020730050) and I am concerned that my PCM need to be reprogrammed to accommodate this change. The transmission is in what I presume limp mode and I don’t get top gear. Although on one particular day (just as the first fault code first registered) it w…
Last reply by 2000montana, -
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New: LAQ 1.2 L 16V DOHC B-series, replaces 1.2 and 1.5 L SOHC engines in Gentra/Aveo (non-US), and Wuling Sunshine and Hongtu compact vans, and new van to be unveiled later. 85 hp @ 6200 rpm in cars, 108 hp @ 6000 rpm in vans. 1.4 L Dual VVT Ecotec Family 1 Gen III, replaces 1.4 L E-tec II in Aveo (Europe) final hp unavailable. LXV 1.6 L Dual VVT Ecotec Family 1 Gen III, replaces LXT 1.6L E-Tec II in Aveo. Power up from 103 to 107 hp. Essentially the same as GM Europe's Z16XER, but with less power, slightly higher compression ratio. 1.8 L Dual VVT Family 1 Gen III, replaces 1.8 L Ecotec Family 1 Gen II in Lacetti/Optra (6-speed auto also replaces ZF 4-speed). Fina…
Last reply by loki, -
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This proposed 2.1 liter Ecotec Adv can replace the 2.0 liter, 2.2 liter and 2.4 liter Ecotecs. The engine is available in naturally aspirated form (with HCCI) and turbocharged form (without HCCI). The HCCI engine serves as the base engine for the RWD Pontiac Solstice, new RWD Pontiac G6, the Saturn Sky, the new RWD Holden Torana, the FWD Chevy Malibu and FWD Chevy Cobalt. The turbocharged engine is available as an option on the Solstice, G6, Sky, Torana and the Cobalt. The Malibu receives a 300 hp HCCI 3.6 liter V6 option. Gear changing is accomplished by either the 6L50, 6T40 or 6T70 6-speed automatic transmissions. There is no manual gear boxes offered even on the RW…
Last reply by AAS, -
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Dwight, i found it. Base 4.3-liter V-6 rated 285 horsepower at 5,300 rpm, 297 pounds-feet of torque at 5,300 rpm (297 hp, 330 lbs.-ft. using E85 fuel). Optional 5.3-liter V-8 rated 355 hp at 5,600 rpm, 383 lbs.-ft. at 5,600 rpm (380 hp, 416 lbs.-ft. on E85). will the lt1 have an e-85 rating of ~490hp.....for track performance fun?
Last reply by loki, -
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I want to keep this a simple poll so forgive me if it seems to lack the typical depth I tend to dwell into on various subjects. The basic premise is this... A 3 cylinder engine is more economical on fuel than a 4-cylinder A 3 cylinder engine is also more compact, lighter and cheaper to build A 3 cylinder engine is more miserly on fuel because it has 25% fewer frictional elements (valves/cylinders/bearings/rods/etc) A 3 cylinder is also easier and more efficient to turbocharge* A 3 cylinder is, however, slightly less refined than a 4 cylinder even with a Balance Shaft added * The reason a 3-cylinder is easier and more efficient to turbocharge is beca…
Last reply by dwightlooi, -
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do you think either one will come out soon ~ next 2 years or will after market come out first? that might be good if gm could make a v6 w/ more than 300 ft lbs since the 3.8 was pretty close when s/c.
Last reply by Chevysnumberone, -
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Unfortunately buying a brand new Buick is out of the question for me at the moment. I have been doing some used car shopping and found a 2003 Century that seems great. Like all Century's it has the 3100 V6. Can anyone give me some feedback on this motor? I have had other vehicles that have the old tried and true 3800... is the 3100 as good? I haven't been able to find a whole lot of info (good or bad) on it.
Last reply by Oracle of Delphi, -
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what is the best way to rebuild a 305 with more horse power the motor now has 170000 miles on it and when i hit the gas the oil pressure drops instead of getting higher and i want more horsepower
Last reply by capriceman, -
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I'm still amazed that they were able to punch out the 60-degree V6 to 3.9L displacement. There just can't be much meat left in those blocks with those big 3.9" holes. I remember when the 2.8L V6 first came out in the X cars. When I saw my first one, I was amazed at how puny it looked. I couldn't imagine that it could be bored or stroked any more...but then along came the 3.1L. Anyone know a good source for info on these engines? I'd love to see the innards. Wikipedia has a decent description but I need visuals! Thanks.
Last reply by dwightlooi, -
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L67 still has the stuff, just found this tonight, its actually a month old http://zzperformance.com/grand_prix/latest_news1.php?id=112 stock used block/lower end, stock differential & final drives, not too shaby !
Last reply by razoredge, -
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I saw two RPO codes for that engine on Wikipedia, LZ8 and LZ9. Both of them have VVT and DOD, according to that. What are the differences then?
Last reply by NeonLX, -
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So why do we have both a 240 & 227 HP spec for the 3900 ?
Last reply by trinacriabob, -
when and where will this show up in GM's engines? i'd just take a guess at "09my (or before) with the v6's, because they could have the best responce for the midsize power and efficency boosts, the v8's should be close behind, w/ the 5.3 making closer to 340-350 hp any articles anyone found on this subject, that isn't the idea pdf on gm's media site? edited for a few spelling corrections
Last reply by Ghost Dog, -
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OK....so I'm flipping through some old C&D rags and in the 10-93 issue, highlighting the "1994 New Cars" there was an article in the Technical Highlights section talking about GM's new "baby" LT1 variant....a 4.3L version that would be the base Caprice Classic engine along with the optional 5.7L LT1.... Does anyone remember this engine? I don't even remember it existing.....and surprised we didn't see it in other applications (might it have fit tranversly in a GM-10 of the time??) Here's how the two engines compared: 4.3L, SFI V8 (5.7L SFI V8) 200 hp (260 hp) 245 lb/ft torque (335 lb/ft torque) Let me know if you know anything about it...!
Last reply by A Horse With No Name, -
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Low NVH for New Duramax 4500 GM's new light-duty diesel to be quiet, clean By RICHARD TRUETT | Link to Original Article @ Autoweek | Published 07/16/07, 11:16 am et DETROIT -- The 4.5-liter turbocharged diesel engine that General Motors plans to introduce in 2010 in light-duty pickups will have breakthrough technology in emissions and noise reduction, says the engine's assistant chief engineer, Jim Minneker. The new diesel is being designed to meet the most stringent federal and California emissions standards and will be available in all 50 states, Minneker said. It will use a urea injection system to control oxides of nitrogen, or NOx. But GM won't be part of the…
Last reply by ZL-1, -
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I found this in the Powertrain guides... ------------------------------- Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 275 HP @ 5600 RPM 290 lb-ft @ 4400 RPM Buick Lucerne LD8 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 275 HP @ 5200 RPM 292 lb-ft @ 4400 RPM Cadillac DTS LD8 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 291 HP @ 6000 RPM 286 lb-ft @ 4400 RPM Cadillac DTS L37 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 320 HP @ 6400 RPM 315 lb-ft @ 4400 RPM Cadillac SRX, Cadillac STS LH2 Northstar 4.6L V8 4565 cc / 279 ci DOHC 4 valves/cyl 320 HP @ 6400 RPM 310 lb-ft @ 4400 RPM Cadillac XLR LH2 -------------------------…
Last reply by Paolino, -
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http://www.sdpc2000.com/catalog/120/produc...minum-Heads.htm Would it be possible to put this into a 4th gen Camaro? I know all-in-all it would cost around $10,000 dollars to get it installed, but would it even fit? I was thinking of maybe a 572 before, but it would just cost way too much. Thanks in advance
Last reply by mightymouse, -
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Hey all, Looking to buy a 1996-1999 Olds Eighty Eight, and want to know which tranny is better for reliability, the 4T60E in the 96-97 or the 4T65E in the 98-99? We had the 4T60 in a 1994 Trans Sport that was nothing but trouble, and have had three 4T65E vans without trouble, but I'm looking for a second opinion. Any help is appreciated.
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As I understand it, this engine will use only 4 cylinders when the computer sees fit in order to save gas milage. On a Buick, the average highway MPG is estimated to be about 24. If you drove one of these engines, and you really wanted to watch your gas milage for whatever reason, would it be possible to coerce the computer to use only 4 cylinders as much as possible? For example, if you drove like grandma, would the engine use just 4 cylinders most of the time? If so, what do you estimate the fuel economy would be?
Last reply by nsn98, -
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We all know all or almost all the GMT900s will get the new 6-speed autos. Everyone says 2008, they need to build up inventory. Do we know for a fact this is the plan. Is is safe to say that all or almost all GMT900s will get them in 2008 or will it be select like it was for 2007, maybe limited to LTs or SLTs, or to the 5.3 but not the 4.8? The GMT355s are another story. They need them too, but I won't go into that. I think this is the only thing "lacking" with the GM trucks. It's public perception not to mention help mileage a little and improve their quickness. If anyone has some insight of what the plan is, it would be greatly appreciated.
Last reply by razoredge, -
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I am being given a 1969 GMC pickup truck and I don't know much about the old GM trucks. All I know is it has an inline 6 engine, auto tranny, and 2-wheel drive.
Last reply by balthazar, -
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And that one ;)
Last reply by the_yellow_dart, -
It looks like GM has finally found a solution to powertrain diversity, I saw this transmission at NAIAS and was surprized to see how small it was. Main reason is the is no drive shaft assembly, now this transmission can easily be mated to a FWD or AWD without any problems. I have pics and will post them soon.
Last reply by dwightlooi, -
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have we all heard that GM is moving to a 2.5L 4 cyl to replace the 2.4? if this is true will that be it's only "improvement"? will it maybe be a SOHC with independent vvt? will it get some other better tech? make it HCCI future ready? any ideas? will it just be made to hit 200HP?
Last reply by dwightlooi, -
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The Push Rod engine has been much maligned for being ancient, inefficient, low tech etc. It has been called “clunkers”, “American Pig Iron” and a whole host of different derogatory nicknames. But is it really the piece of obsolete trash that it is made out to be? I must say I am a DOHC fan and I applaud GM’s move to put the 3.6 DOHC V6 in everything imaginable. I think that the engine from GM’s lineup I’ll most like to have in my car is the LNF 2.0 liter DI turbo. I love the turbo whistle and I don’t really have a taste for the V8 rumble. But, let’s be honest about the whole Push Rod thing and clear up all the myths shall we? Why Push Rods? There were overhead cam engin…
Last reply by dwightlooi, -
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A New Internet Stop for GM Performance Parts DETROIT – GM Performance Parts (GMPP) is unleashing a new power – and instead of delivering it in a crate, this power is delivered on the web at GMPP’s all-new website, www.gmperformanceparts.com. As the leader in providing high performance solutions to the automotive aftermarket, GMPP is extending its horsepower expertise to this newly launched website created by advertising agency, Leo Burnett Detroit. “Over the past several years we’ve introduced some exciting new products, like the 350/290 HP, the ZZ572 and the LS7,” said Lisa Reffett, marketing manager, GM Performance Parts. “It seems only fitting that our website sho…
Last reply by PurdueGuy, -
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the new specs show adjusted redlines... 6400 RPM for the 4 6000 RPM for the 9 and the power in the aura is also in the g6's 224 hp and 220 lbft from media.gm the bu has a 217hp & lbft rating the impala and MC didn't get this slightly more powerful engine.... think it's from quanity demand or would they have to get them recertified if they changed the engine?
Last reply by loki, -
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The small block V8 has powered the Corvette and many other GM performance cars for decades. Among its advantages is its relatively compact size and modest weight compared to overhead cam engines of the same displacement. In fact, an aluminum small block like the LS3 can often be slightly lighter and smaller than a DOHC 32-valve engine of Teutonic pedigree boasting the same power output. Most of its advantages stems from the elimination of a pair of bulky and fat DOHC heads and its belt or chain drives. However, the small block is not without its demerits. The need to utilize a higher displacement to achieve comparable output to a state of the art DOHC powerplant means th…
Last reply by dwightlooi, -
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i bet some performance parts'll be out by early 07 to boost power to about 270hp or more? or will "this" be an option on the 08 model, if the cadillac gets DI and making more like 280hp in the next year. any ideas on this, inside info?
Last reply by loki, -
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GM@NAIAS GM E-Flex Press Release Chevrolet Volt Image Gallery Chevrolet Volt Press Release GM’s E-FLEX System moves the automobile toward a new electric age DETROIT – General Motors Corp. will introduce multiple propulsion systems that fit into a common chassis, using electric drive to help the world diversify energy sources and establish electricity from the grid as one of those sources. GM refers to this family of propulsion systems as the “E-flex System.” “The DNA of the automobile has not changed in more than 100 years,” said Larry Burns, GM vice president of research and development and strategic planning. “Vehicles still operate in pretty much the same fash…
Last reply by dwightlooi, -
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Now that the '08 Malibu ditched the LZ4, there aren't many cars left with it. G6, Aura, Impala, that's pretty much it. And by the sound of things, the next iteration of these cars will use the 3.6L as well. So the family is dead, basically? EDIT: Changed the title to reduce flames.
Last reply by dwightlooi, -
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other than the possible supercharged 6.2L in the corvette, any ideas of this engine's designation and output #'s ? (not the specs from the escalade now) any news on this or ideas when (near official) news of this would appear?
Last reply by FUTURE_OF_GM, -
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is GM working on a 5 or 6 speed auto for the delta platform? or is one allready planned from the "series" that is starting with the 6speed in the aura?
Last reply by loki, -
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Only pictures I can find of these High Value 3.5L/3.9L V6s show the engine as installed, complete with that darned plastic cover that hides the intake manifold detail...
Last reply by NeonLX, -
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doesn't the aura have a ~224hp 3.5L base engine right? that's ~13 hp over the impala, so can they (re)tune the 3.9L for more like 250 easily if they wanted? or did gm just move the torque up the powerband to have a HO 3.5L for saturn?
Last reply by ToniCipriani, -
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Building the Ultimate Hybrid Let’s face it, Hybrids are not about sensibilities as much as CTS-Vs are not about sensibilities. A sensible buyer will understand that a Prius does not save you any money over a Corolla and a CTS 3.6 gets you around with better comfort while burning less gas than it’s V brethren. Hybrids are about making the owners feel good. And, while CTS-V owners feel good about getting pressed to their seats, being able to carve mountain roads at highly illegal speeds should they choose to do so and secretly musing about the parody of driving to the supermarket in a 556hp rocket sled in sheep’s clothing, Hybrid owners enjoy watching the MPG gauge return …
Last reply by dwightlooi, -
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There has been much talk about a GM Turbo Six. Here’s how I feel it should be built:- V6 DI Twin-Turbo 3.2 liters engine built using as many off-the-shelf components as possible Engine block from 3.0 DI V6 (LF1) Crank and rods from 3.6 DI V6 (LLT) High efficiency turbochargers optimized for flow. Moderate Boost, High Compression Air-to-water intercooler to avoid bulky air hoses, intercoolers and minimize pressurized volume Specifications:- Valvetrain: Chain driven DOHC 4-valves/cyl w/intake & exhaust VVT Fuel Injection: Homogeneous Charge Direct Gasoline Injection Bore x Stroke: 89 x 85.6 mm (LF1 Bore x LLT Stroke) Capacity: 3195…
Last reply by dwightlooi, -
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GM has claimed that along with direct injection, the upcoming Gen V Small Block V8 will feature a (quote) "brand new combustion system". This has left many guessing at what that is supposed to imply. The common speculations are:- Cam-in-cam independent VVT Variable Valve Lift Advanced version of Cylinder Deactivation Some combination of the above But, I think we may all have overlooked the obvious... There has been much talk about the possibility -- some even say likelihood -- that the next generation V8s will see a downsizing of displacement rather than improvements in performance. However, reducing displacement is not nearly as effective as going to an Atk…
Last reply by dwightlooi, -
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OK, of all the GM brands, I'm least familiar with Buick powertrains in a historical sense. I've always "heard" that the 300, 340 & 350 CID V8s from the 1960s-70s were "small blocks" and had their roots in the early 1960s 215 CID V8, which was at least sometimes an aluminum engine. I also have it rolling around in my head that the modern Buick "big blocks" were intro'd for 1967 and were available in 400, 430 and 455 CID versions (1970 for the 455). So here are my questions: Is this summary essentially true? Are the 1967+ big blocks related at all to the previous nail-head V8s? How about the small blocks? Did the early Olds F85/Cutlass come with the Buick 215…
Last reply by NeonLX, -
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-- FICTION -- The Microblock V8 The 2011 Microblock V8 engine is designed to succeed both the Small Block and Northstar families as GM’s sole V8 for the second decade of the millennium. The design objective is to create a highly compact engine equaling the LS-family’s performance, while being more compact, more economical and weighing no more than the 3.6 liter DOHC V6. The engine is a pushrod OHV design incorporating the latest technologies including direct gasoline injection and variable cam phasing. Variable rocket ratio was considered but relegated to a future upgrade due to the additional costs and complexities it will incur. The Microblock engine is based nei…
Last reply by dwightlooi, -
C.I.B v-6s
by loki- 7 replies
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any real news about when this is going to be decreased significatly? 3.4L, maybe 08 will be the last year? 3.5L, be around till EP2 at least 3.8L, be fazed out after LaX dies on w-body? 3.9L, maybe dead after impala w-body dies? 4.3L, other than being the only v6 still with a manual option, why? i would like to see GM make one v-6 to the best standards it could, comparable to an LSx motor in output/cu.in.
Last reply by Hudson, -
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I'm just wondering here.... What would happen if we contracted the nice folks over at Catepillar to build a diesel for Chevy and GMC trucks? I know that they already have an engine avialable for the M/D and H/D (as in 4500-9500 series) but what about the 3/4-ton and 1-ton trucks, can't they get a Cat under the hood too? Thoughts, questions, and no I'm not bashing the Duramax in anyway, its a great diesel.
Last reply by 76ChevyTrucker, -
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GM's Unprecedented Launch of 6spd Transmissions Shifts into High Gear PONTIAC, Mich. - Transmission engineers at General Motors Corp. have given new meaning to the term "overdrive." By using high-tech computerized tools, they launched nine new fuel-saving six-speed transmission models - the industry's largest lineup - in just four short years. Furthermore, their use of this technology has shaved as much as six months and $15 million from the typical transmission development process. GM transmission engineers use sophisticated math modeling, among other advanced tools, to not only design the transmission components, but also to predict and test their reliability, analy…
Last reply by loki, -
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G. David Felt Alternative Fuels & Propulsion writer www.CheersandGears.com Connect & Cruise CRATE POWERTRAIN SYSTEMS GM has launched their complete solution packages for older auto's. Including both RWD and 4WD solutions, GM wanted to get these launched with a mail-in rebate for an end of the year present to all motor-heads. GM is offering 12 different combinations including emissions certified E-ROD packages. These packages include a factory tuned engine and transmission with all the electronic control modules, wiring harness and other key components so you can truly strip out the old powertrain and go modern. Engine choices come as follows: …
Last reply by Drew Dowdell, -
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A company sells both a ported throttle body and a heat resistant plastic spacer to go between the intake manifold and the engine that greatly reduces heat transfer. The combo costs a bit under $300 (after you send back a stock throttle body) and is widely known to make gains of 10+ horsepower and torque at peak, but over 20 hp/tq under the curve without any custom tuning. It seems hard to believe, but the spacer alone decreases heat soak of the intake manifold by as much as 30 degrees and is responsible for much of the gains (proven in testimonials using laser temp guns). After tuning my 3.6L Malibu and adding a cone intake, it's already making 270+ horsepower at the cran…
Last reply by cp-the-nerd, -
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Well, with the recent press release about the 3.6L HF V6 w/DI, discussion arose about what GM would do with the Northstar. If the same percentage gains are made on the Northstar as on the 3.6L HF V6, the Northstar would deliever approximately 370HP and 340 lb-ft without any other modifications. I'm sure with a few more tweaks it could be up to 380HP and 350 lb-ft. So, if a DI Northstar made 380/350, does everyone think this would be sufficient or should GM develop a new DOHC V8 for Cadillacs and Buicks?
Last reply by 76ChevyTrucker, -
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They're the same size (231ci/3791cc), but the 3900 has more power and can have DOD. Is the 3900 simply a more modern 3800 with a slightly bigger crank?
Last reply by ponchoman49, -
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Ok, think of the top of a cylinder on a GM pushrod. Ideally, you'll have 3 valves, put possibly only 2. You have a rocker assmebly sitting over the top of the valve that actuates the valve itself -- and that takes room. You don't want to limit placement of the spark plug -- ideal location is dead center of the cylinder -- to provide with a complete, uniform spark -- which will give you the cleanest, most efficient fuel burn. How do you squeeze a fuel injector into that all that? If direct injection provides the substantial power boost and fuel economy gains it's rumored to deliver, does this deliver a death-blow to GM's pushrods? I'm not saying t…
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Direct Injection Connection Flint Engine South building GM's next generation engine THE FLINT JOURNAL FIRST EDITION Thursday, February 01, 2007 | By Todd Seibt FLINT - Imagine an internal combustion engine that cuts nasty tailpipe emissions, leans itself out in cruise mode - and can still kick gas when it's time to pass. Too good to be true? Actually, it's being built near you. Workers at General Motors Flint Engine South have already assembled a few pre-production versions of the next generation of GM's spark ignition direct injection 3.6-liter V-6 engines. They expect to start full production in April, for installation in the all-new 2008 Cadillac CTS, and…
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We know right now the 2.0L Ecotec SIDI Turbo and the 3.6L are getting DI, do we also know at the moment which engines will be getting DI as well?
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A DIRTY AIR FILTER WILL NOT REDUCE FUEL ECONOMY! Sounds counter intuitive, but it's true! Here's why... In a gasoline engine, the engine's output is controlled by choking it with the throttle body. It restricts the airflow to the engine at all times except when you put the gas pedal to the floor. Whatever the airflow happens to be, it is measured by the Air Flow Meter which then tells the engine how much fuel to inject. A dirty filter reduces airflow to the engine just like the throttle! The filter and the throttle restrictions combined results in the net airflow to the engine. If you have a clean filter, you'll end up using a slightly smaller throttle opening (gas p…
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Background Many cars now come equipped with Start/Stop. Many consumers hate having their engines turn off automatically at a stop light and coming back on when they release the brake pedal. They hate it because it reduces the life of the starter, degrades the battery, may increase wear on the engine and REDUCES REFINEMENT of their vehicles -- having the motor shudder to a stop and shuddering to life repeatedly is decidedly less refined than a smooth imperceptible idle. They hate it because it saves an imperceptible amount of fuel in most driving conditions. Most manufacturers equip cars with a Start/Stop disable button (except in atrocious cases like the 2017 Te…
Last reply by daves87rs, -
OK, so whos got it ? Is it worth it ? Switching to a 3 cyl ? I hear roughness, out of balance and vibration ? I really believe its time to leave this V6 behind and build small alloy HF V8's in the 3-4 litre displacements. There is no time like now to begin the process, hell the R&D is nearly done with the HF V6's and OHC V8's it just needs to be applied to small displacement, small dimension & weight V8's. Everyone is crying for something class leading, who else is more qualified than GM and who else has silky smooth, small displacement v8's other than the exotics ? OK, so shoot me, but tell me what you think first ?
Last reply by razoredge, -
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I got word that GM was actually developing a small, very high-power and highly technological DOHC V8 for the C7 before the whole financial crisis fully developed. I don't want to say too much on it because I'm not sure how much is true, but I trust the sources I have on this. Just wondering your thoughts on this since we've always had pushrods in the Corvette and this would be an entirely new direction.
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page 3 current mid term technolgies. http://www.iea.org/textbase/work/2004/shanghai/Chen.PDF
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I can't find the weight figures on any of the ecotec engines, help me.
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Since the Eco has been out for a while now ( Saturns, Cavaliers)...I was curious-do you feel it is a good engine ? (overall) I would have to say yes, at least for me. NO issues at all with mine, though it only has 35k on it now... Guy I work with has 120k on his 03 Cavalier w/ the eco. No issues at all-still runs well-burns a tiny bit of oil. Not bad for a beat on car. Neighbor is a sales rep. Has almost 90k on his Cobalt. Speedo just stopped working, but his engine is holding up well too... So far so good...
Last reply by daves87rs, -
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On the Cobalt both engines get 25/35 with the manual transmission and 24/32 with the automatic. I know it's because the 2.4 has VVT. Is GM working on putting VVT on the 2.2? Or maybe even making a slightly smaller Ecotec with VVT? It doesn't make a lot of sense to have a the 2.2 get the same mpg as the 2.4. I'd be pretty impressed if GM had an engine which could get something in the high 20's in city driving and high 30's for freeway driving, which is something that a 2.2 with VVT could probably accomplish.
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Eight Speeds Not Just for Lexus Anymore? General Motors might not be the first company that comes to mind when thinking about high-tech gadgets and gizmos. But a new trademark filing suggests The General might be planning to go after technology-obsessed Lexus with an eight speed transmission of its own. On August 8th, GM registered the name "8 Speed" (pictured) in reference to automobile transmissions. To us, this can only mean one thing. Currently, Lexus is the only automaker with an eight speed transmission. Might GM's Cadillac and Buick brands be getting ready to fight back? Pictured right is the styled text intended for the trademark (low-resolution only). Read "Tra…
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Was looking for some feedback on the pros/cons of using differing engine layouts, particularly in regards to the resulting torque curve as well as the peak power/torque numbers. The impetus behind the question are the specs of the new 2.8L I4 duramax diesel at the LA auto show (in the Colorado ZR2 concept). GM is reporting that it will be putting out 181hp at 3400rpm and 369 lb ft at 2000 rpm. Chrysler's current 3.0L V6 diesel puts out 240hp at 3600rpm and 420 lb ft at 2000rpm. What are the advantages to GM choosing to use a 2.8L I4 diesel instead of a 3.0L V6 diesel here? Displacements are very close but the V6 is producing 60 additional peak hp at only 200r…
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The Chevy volt is a nice technological exercise, but in practical terms there aren’t that many people who want to spend $40K to save money on gas with a plug in vehicle. Not that many wants to pay higher taxes so government can subsidize it either. If you set aside the plug in aspects of the vehicle and just consider its IC-electric efficiency, it is not very impressive. The Volt manages 35mpg city / 40 highway on its 1.4 liter engine, electric motor and whatever energy regeneration through braking it can achieve. That’s worse than the Prius (51 / 48), the Insight (40 / 43) or – in terms of the highway numbers – the Cruze Eco (42). This, quite honestly, is not that stella…
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I was looking for info about the G6's manual transmission, and I couldn't find FGP anywhere. I found one reference that FGP is Fiat-GM Powertrain. Is this true? If it is, could this be why the G6 is losing the manual transmission, since this is to be gone by December 2007?
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meida.gm says the 3.6L for lambda is gearing up. -------------- FOR RELEASE: 2006-09-22 Flint Engine South Begins Production Of Versatile 2007 GM 3.6L V-6 VVT Engine This Week FLINT , Mich. – Today, General Motors delivered on its 2004 promise to invest approximately $300 million in its Flint Engine South manufacturing plant, further strengthening a key GM manufacturing center and contributing to the state and local economy. GM Flint South began production of the 3.6L V-6 with variable valve timing (VVT), which is used in the 2007 Cadillac CTS, SRX and STS; Saturn Outlook; GMC Acadia and slated for the 2008 Buick Enclave. The 3.6L V-6 VVT is an all-aluminum, dua…
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i'm guessing the next gen N* will have it, but will the 3.6 be getting afm anytime soon?
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GM powertrain plans: Variety - but no diesel yet Richard Truett | | Automotive News / August 21, 2006 - 6:00 am General Motors' powertrain division is rolling out a variety of fuel-saving, high-tech engines; hybrid powertrains; and six-speed automatic transmissions. Because of high costs, GM does not plan to add diesels to passenger cars and light trucks before at least 2010. Here's a look at GM's strategy: Hybrids: GM plans a dozen hybrids by the end of the decade. But only eight models have been named thus far. GM's hybrid plans are much like its engine strategy. Some hybrid powertrains will be high-value and some high-feature. GM's first real hybrid, the Sa…
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Richard Truett Automotive News August 25, 2008 - 12:01 am ET DETROIT — General Motors' heavy investments in powertrain technology are beginning to pay off in terms of better fuel economy. -- GM is slowly building its hybrid business and will launch one new hybrid per quarter for the next four years. -- The company has just opened an advanced powertrain testing laboratory in suburban Detroit. -- The automaker is rolling out engine technologies that maintain performance while lowering emissions and fuel use. -- GM has been adding gears to automatic transmissions, reducing the weight of its powertrains and designing engines capable of being mass produced wit…
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I'm curious as to what benefit(s) the G80 Limited Slip Rear Differential would provide me on my Saturn SKY. The SKY will be a 3rd vehicle in my household and will only be used on nice sunny days (no rain unless I get caught in an unexpected storm and definitely NO snow). Should I include it when I option my image when at the dealership, or should I save myself some $$$? (anyone know the cost, presumably on the Solstice?) EDIT: $195 (Solstice), per GMBuyPower.com (is it worth the $195)???
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simple. one would think that relying on gears instead of chain could improve cam performance and timing. gears may require more power to run and have more friction. wear may be an issue as well. I am only aware of one engine that i know of that had gear driven overhead cam. Honda produced a VFR interceptor motorcycle that had it for awhile. It apparently was a strong performer. I am not certain how this worked over time. Remember, Honda had oval pistons in some bikes too. what does anyone know regarding gear driven cams and any advantages / disadvantages? Mostly I am thinking in the context of an OHC or DOHC motor. Wouldn't this eliminate timing chain or belt…
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4th Generation Ecotec (circa 2017) The 4th Generation Ecotec represents a significant architectural shift in GM’s High Feature engines and a significant reduction in the number of different engines in the lineup. There is no longer Family 0, 1 and 2 Ecotecs, and the total number of concurrently produced variants goes from 24 to just 5 for all applications. The following summarizes the key features of the Ecotec4:- All engines are turbocharged and utilize air-to-water intercooler(s) All engines sport a 79 mm (bore) x 81.5mm (stroke) with a 10.8:1 compression ratio The valvetrain transitions to a SOHC layout with concentric cams 2-stage cam profile switching and dual ind…
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Generation V - Pushrods for the Future The pushrod layout is chosen for the following reasons:- o In the interest of fuel economy, engines should have minimum internal friction. o In the interest of fuel economy, it is better to decrease cylinder count than to decrease displacement. o In the interest of performance, engines should have best in class power-to-weight ratios. o In the interest of packaging, engines should have best in class power-to-size (external dimension) ratios. o Advanced Technology like Direct Injection, Independent VVT and roller followers can be applied to pushrod engines Gen V 6.2 V8s have the highest power-to-weight and power-to-size (…
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Here is a link to a web story on what one person expects we will see and speculate on some wild cards. I thought since we have not really spoken much on this this would help us try to predict what GM will do. Lets try to keep realistic here and keep this to what we think they will do not what we wish they will do. I would like to see who here can come closest to predicting what will really go into production. http://www.enginelab...-block/?print=1 Things have been a little slow here and we need something to help get us rev'd up for Detroit in a few months.
Last reply by Drew Dowdell, -
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Last year on GM's powertrain site there was a reference to a new GM designed six speed manual transmission for rear wheel drive cehicles that would share parts with the existing 6 speed automatic. Does anyone know anything about the status of this? Is it still going to happen or not? Found a reference to it here: http://www.findarticles.com/p/articles/mi_...83/ai_106733133
Last reply by Achelous, -
Flint, MI — General Motors Chairman and Chief Executive Officer Rick Wagoner today announced that the company will invest $370 million in the U.S. to build a new manufacturing plant for its global 4-cylinder engines in Flint, Mich. The plant will begin production in the U.S. in 2010, and will be the exclusive manufacturing facility in North America to produce the Chevrolet Volt's range extending engine. The investment in Flint is one of several that have been announced at U.S. plants in the past 10 years, adding up to over a $9 billion total investment in Michigan and more than $42 billion in the United States. … Full releases, photos and video at AutoReport Family …
Last reply by thegriffon, -
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GM Daewoo Celebrates Production of 10 Millionth Engine, Start of Production of New Ecotec Gen Ⅲ Engine Press Release Seoul — GM Daewoo Auto & Technology (GM Daewoo) held a ceremony today at its Bupyeong headquarters to celebrate the production of the automaker's 10 millionth engine and the start of production of its new Ecotec Gen Ⅲ family of engines. “The production of our 10 millionth engine serves as an important milestone,” said GM Daewoo President and CEO Michael A. Grimaldi. “It confirms how far the domestic automotive industry has come and the important role that Korea and GM Daewoo are playing in the global industry.” Road to 10 Million Engines GM Da…
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Link: http://media.gm.com/servlet/GatewayServlet...n=2&docid=17541
Last reply by Ghost Dog, -
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GM Developing Small Engine in Korea, China New motor partners with Daewoo, Suzuki By ALYSHA WEBB | Link to Original Article @ AutoWeek | Published 06/26/07, 12:03 pm et SHANGHAI -- General Motors is developing an engine in Korea and China that may be used globally to replace GM's 1.6-liter engine, say supplier and other sources. The engine is being developed jointly at GM Daewoo Auto & Technology, which is a GM subsidiary in Korea; and the Pan Asia Technical Automotive Center Co. in Shanghai. It will be available in 1.4- and 1.6-liter versions. GM Daewoo said it will not comment on future programs. The new engine would be useful in the United States, where GM …
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GM developing home hydrogen refueling device 24-September-2006 Source:Chris Woodyard-USA Today General Motors is building a prototype for a home hydrogen refueling unit in hopes of selling fuel-cell cars by 2011. The unit, which would make hydrogen using either electricity or sunlight, would help sidestep one of the most vexing problems surrounding the creation of the pollution-free, alternative-power cars: how to persuade oil companies to invest in expensive new hydrogen stations that would compete with their core product, gasoline. The automaker's goal is an affordable, compact unit that would allow customers to fill their cars overnight in their own garage…
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GM Diesel Engine Lineup - Circa 2013
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GM Electra – Performance Hybrid Module The Electra module is a hybrid drive train system that can be added to existing GM RWD drive trains. It consists of a drop in rear differential replacement which includes a pair of highly compact 30hp permanent magnet motor/generators and a 1.5 kWh Lithium-Ion battery pack which fits in place of the spare tire well. More than just fuel economy While “green” buyers and individuals who subscribe to the global warming hypothesis may find buying a hybrid a worthwhile investment, anyone who does the math can see that at $4 a gallon it’ll take an average driver 6 to 12 years to just break even on an investment in a hybrid drive train…
Last reply by loki, -
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Hey guys, I'm looking for some information on the following engines not included in the C&G Resource Guide (found at the forum header). The information that I am looking for is as follows: Engine Name (i.e. Ecotec 2.2L I4) Displacement (cc / ci) Configuration (i.e. DOHC 4 valves/cylinder) HP @ RPM lb-ft @ RPM Applications (models each engine is found in) Engine Code (i.e. LS2 or LK5). Here is the list of engines I'm looking for (along with any others you may find that aren't on the C&G Resource Guide: 2.0L Turbo Ecotec I4 (9-3, Solstice/Sky) 2.3L Turbo I4 (Saab 9-5) 2.9L I4 (Colorado and Canyon) 3.6L DI V6 (Aura XR and ’08 CTS) 2.4L Hybrid I4 (Aura/Vue Green Li…
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DETROIT – Drivers of the new 2014 Chevrolet Impala will enjoy sweet sound and sweeter savings at the pump thanks to precision noise reduction and a new advanced valvetrain technology on the Ecotec 2.5L four-cylinder engine, arriving in dealerships this month. Chevrolet expects the 2.5L model to be a popular choice among Impala buyers. More than two-thirds of Chevrolet cars sold in the first quarter of 2013 had a four-cylinder engine. “Impala customers have three engines to choose from, appealing to a wide array of needs,” said Chris Perry vice president, Chevrolet Marketing. “But the 2.5L model in particular offers both improved fuel economy as well as an accessible sta…
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Eight Engines -- starting with 3-cylinders and ending with Pushrod V8s.
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The Volt is due soon and will be the top dog in GM's hybrid arsenal. Prior BAS hybrids didn't make positive market vibes, although BAS potential is good if they do it right. Vue two mode was dead. will it come back? The pickup hybrids haven't sold as well as they wanted. No Converj. Big deal? Which of GM's models would be best suited for hybrids from marketability standpoint? Even the Prius needs cheap leases to move the metal now with Toyota. Other Toyota hybrids and the Insight and such have not been taking the market by storm. GM hybrids, what's next?
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GM inaugurates new engine plant in southern China Associated Press | Link to Original Article @ DetNews SHANGHAI, China -- General Motors Corp. inaugurated a new engine plant at its minicar factory SAIC-GM-Wuling Automobile Co. in southern China on Monday. The 2 billion yuan ($263 million) new engine plant, adjacent to the factory in Liuzhou, will have a capacity of 300,000 units a year and begin production of 1.1-liter and 1.2-liter engines in August, GM said in a statement. The new engine plant will facilitate new product development at the minicar factory, which now buys engines and related parts from outside suppliers, the company said. The engines will be used …
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GM Plans First Light Duty V-8 Clean Diesel for North America High-efficiency V-8 scheduled for pickup trucks under 8,600 pounds Gross Vehicle Weight and HUMMER H2 Low emissions, high performance and excellent fuel economy Expected to deliver class-leading torque, power and refinement Manufactured at the GM Powertrain Tonawanda engine plant TONAWANDA, N.Y. – General Motors Corp. will introduce a new, state-of-the-art 4.5L V-8 Duramax turbo-diesel that improves engine fuel efficiency by 25 percent, reduces CO2 emissions by 13 percent and cuts particulates and NOx emissions by at least 90 percent for North American light duty trucks and the HUMMER H2 built after 200…
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GM To Invest $100 Million In New York Plant For Diesel Engine Production TONAWANDA , N.Y. – General Motors Corp. will invest $100 million in its Tonawanda engine plant to produce an all-new, 4.5-liter V-8 Duramax high-output diesel engine for the Chevrolet Silverado and GMC Sierra light-duty pickup trucks and the HUMMER H2. The engine fuel efficiency improves by 25 percent when compared with gasoline engines. Environmental benefits of the new engine include a 13-percent reduction in CO2 versus gasoline engines, and at least a 90-percent reduction in particulates and NOx when compared to diesel vehicles today. The investment includes a 200,000-square-foot facility ren…
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GM May Sell Allison Transmission General Motors Corp. said Thursday that it may sell its Allison Transmission division as part of its effort to raise money and focus on its core business. GM said in a news release that "it is looking at strategic options" for the Indianapolis-based transmission unit "including a potential sale of the business." The world's leading automaker lost $3.05 billion in the first three quarters of 2006. Allison Transmission has 3,400 employees and seven plants in Indianapolis. It makes and sells automatic transmissions for commercial and military vehicles. "This process is another potential step in GM's plan to improve liquidity through th…
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GM Anxious To Sell New Two-Mode Hybrid Transmission To Other Automakers Link to Original Article @ AutoNews Ford and General Motors could get a lot closer. The automakers have co-developed a six-speed automatic for front-drive cars. Now Ford is interested in using GM's Two Mode hybrid transmission, which debuts on the 2008 Chevrolet Tahoe and GMC Yukon SUVs. Kuzak said Ford has been talking to GM about buying a version of the Two Mode for use in rear-drive trucks. No deals have been announced. GM is anxious to sell the transmission to other automakers to increase production and lower costs. GM also has a fwd version of the Two Mode slated for production next ye…
Last reply by loki, -
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I just counted over 50 different engines in GM's current North American lineup. I feel that this is absolutely unnecessary, and like brand proliferation does more to burden R&D, supply chain and marketing that anything else. I'll like to propose a much simpler lineup with just four (4) engines available in FWD and RWD configurations as needed. 1.4 liter I4 NA or Turbo -- 100~140hp; 95~148 lb-ft 2.0 liter I4 DI NA or Turbo -- 170~260hp; 150~260 lb-ft 3.6 liter V6 DI NA -- 288~304 hp; 270~273 lb-ft 6.2 liter V8 OHV NA or Supercharged -- 400~638hp; 395~604 lb-ft I'll also like to propose trimming down to just four (5) automatic transmissions and one (1) manua…
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General Motors to buy stake in diesel engine manufacturer Buys 50% of VM Motori from Penske Corp July 16, 2007 | BY KATIE MERX | Link to Original Article @ Detroit Free Press General Motors Corp. announced on Monday that it has agreed to buy a 50% stake in Italian diesel engine manufacturer VM Motori S.p.A. from Penske Corp. in a deal expected to expand GM’s diesel expertise in global markets. “Diesel engines have a very important role in GM’s global advanced propulsion strategy,” Tom Stephens, group vice president of GM Global Powertrain and Quality, said in a statement. “We are leveraging expertise and resources within our company and through technology partners to …
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GM Takes New Combustion Technology Out of the Lab and Onto the Road PONTIAC, Mich – Engine experts have dreamt about it, talked about it and lectured about it, and today – for the first time – General Motors is letting outside parties drive the “most awaited advanced combustion technology” of the past 30 years. GM demonstrated the combustion process, known formally as homogeneous charge compression ignition, or HCCI, for the first time in two driveable concept vehicles, a 2007 Saturn Aura and Opel Vectra. When combined with the enabling advanced technologies such as direct injection, electric cam phasing, variable valve lift and cylinder pressure sensing, HCCI provides…
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Is there much feedback on the 4L60E auto trans on spinning the splines out of the clutch basket resulting in no 2,4th or overdrive and no reverse?
Last reply by greenhornet,
