Powertrain
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The HHR SS is a big deal. Not that I care for the 50s wagon looks or the vehicle interests me in anyway. (1) It is a big deal because this is the first transverse engine, FWD, application of the 2.0 liter DI-VVT Turbo engine (LNF). (2) It also confirms that GM is not toning down or castrating the LNF to a lower power level for sideways, FWD, applications. Transverse LNFs will still be 260hp. (3) The Chevy Cobalt SS Supercharged has been retired from the lineup. Before the HHR SS came along there are all kinds of doubt as to whether an effort will be made to repackage the LNF for FWD applications and hence whether the Cobalt as a chance of getting the turbo engine. N…
Last reply by dwightlooi, -
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And that one ;)
Last reply by the_yellow_dart, -
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I have a '99 Silverado Z71 with the Vortec 5300 - awesome engine. I have never had any problems with my truck and has served me faithfully from the day I bought it at roughly 144,000 miles until today 168,000. I have put a flowmaster exhaust system on there and have swapped the stock airfilter for a K&N filter. This past summer I bought a Hypertech Power II Programmer for my truck with dual fuel technology. I programmed my truck to run best on 87 octane, for the transmission to have harder shifts to extend trans life, and I reset the governor to 128 mph (my tires' max speed rating). Ever since I reprogrammed my truck there has been a slight rattle behind the driv…
Last reply by VMIZ71, -
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If we take a step back and reconsider the good old Tachometer, one has to ponder... does all those markings and graduations matter? I mean do you really care if to know if the engine is making 4153 rpm? If you do, most tachs are not marked that precisely anyway. If all that is important is knowing roughly where you are in the rev range then do all those graduations serve only to clutter up and confuse? In the course of daily driving -- even spirited driving -- what really matters really are the basics. Is the engine idling at the intended RPMs? Am I about to bump the rev limiter? Where I am on the rev range? Am I crusing at an economical engine speed? I propose a very…
Last reply by regfootball, -
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Well, lately I've noticed mileage estimates for old cars have changed and reduced, dramatically in some cases. I drive a 2001 Chevrolet Malibu. It used to be rated at 20 mpg city, 29 highway. Now it's rated at 16 mpg city, 26 highway and 21 combined. Can anyone tell me how the hell this was done? Was everything re-tested or just reduced by a certain percentage? Is this accurate at all do you think? I have never seen anywhere near 16 mpg even in all city driving and with a lead foot. Maybe these are good estimates but the older GM engines don't get mileage that bad? Perhaps this is a gimmick to make new engines seem more efficient? I really don't understand. We hav…
Last reply by Blake Noble, -
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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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Thought I'd put that back up ^_^
Last reply by thegriffon, -
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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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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…
Last reply by pow, -
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any known plans to put these trannies in passenger vehicles? ... we know they're going into the gmt900s and probably the NG vue... is this going to be an option for larger engines over the BAS system?
Last reply by thegriffon, -
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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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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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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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just as a fun/funny thought. why not? a 2.8L v8 twin turbo with ~300 hp and torque, maybe a tad more than that if it was not tuned for economy. yes i realize the size of the engine would be kinda outlandish, ..using the 10% displacement difference, it'd take a ~3.1L CIB engine to make that power. lol a little too micro-block for you dwight? haha shoudl put out a tad more torque than the v6 of that size... rev better? damn, this is seeming totally stupid. oh well, thoughts? how about a 4.2L v12? towards 500hp? what.. it's been done?.... awwwww
Last reply by Sixty8panther, -
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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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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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Here's an in depth presentation on the LT1 Pushrod V8 by its Chief Engineer Tadge Juechter. http://media.gm.com/dld/content/Pages/presskits/us/en/Chevrolet/gen5/_jcr_content/rightpar/sectioncontainer_1/par/download/file.res/LT1%20presentation%2024OC12a.pdf This is an official GM press kit distribution; all relevant copyrights and fair usage etiquette apply. In short, the information is public domain and you may quote it or share it. But, you may not claim it as your own, you may not modify it or distort the information, and you may not use it to sell a commercial product.
Last reply by dwightlooi, -
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With gas prices rising as high, if not higher than they were last summer and with VW's Jetta bluetec 2.0TDI rumored to get 40/60 mpg, I'm wondering if GM is missing an opportunity. I know that diesels cost more - and GM is skeptical that people would be willing to pay that premium, but consider this: If you drive 15,000 miles/year and your 4cyl car averages 30mpg, you'll consume 500 gallons of gas. Prices in my neighborhood for gasoline just jumped to $3.39 today.. so that's $1695/year. If you get 60mpg in your TDI, you'll consume 250 gallons of diesel. Current prices for diesel here are $2.79/gallon, which gets you to $697.50/year. You are a 2 diet coke's away fr…
Last reply by dwightlooi, -
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So why do we have both a 240 & 227 HP spec for the 3900 ?
Last reply by trinacriabob, -
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I borrowed my grandmothers 2010 CTS wagon with the 3.0 litre V6 yesterday for a trip from central NJ to Virginia Beach, VA and back again. Approx. 650 miles in one day. The reason I had it, is because I take care of her cars for her, and its first service was due. I stopped at the auto parts store to pick up oil and a filter, and was instructed that the 3.0 in the CTS requires a full synthetic oil, preferably Mobile 1 - to the tune of $8.00 a quart, it needs 6 quarts. My question is: Is the 3.0 litre V6 that is in the CTS the same 3.0 litre that was in the Buick LaCrosse, and is in the Equinox/Terrain? If so, does the Equinox require a fully synthetic? It would see…
Last reply by jwbouch, -
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Popular mechanics just came in today, says that "GM will show an HCCI next year" thoughts?
Last reply by Ghost Dog, -
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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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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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I have read numerous comments in auto mags and auto guides that newer engines are more efficient and lasting longer? I am in the 200,000 mile club myself (the first time). So what are the reasons? Lower rpms by additional gears, better tolerances in the factory, fuel delivery systems? Please chime in on what is making engines last considerably longer. I am curious. The one that stumps me the most is fuel delivery? How does multi port fuel injection improve the longevity of the engine over carburetion?
Last reply by 76ChevyTrucker, -
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GM's 3.9L V-6 Family Grows With E85-Capable And Fuel-Saving Active Fuel Management™ Versions Chicago, IL. - Today at the Midwest Automotive Media Association meeting Ed Peper, General Manager, Chevrolet, announced General Motor's first V-6 application of fuel-saving Active Fuel Management™ on the 3.9L V-6 offered in the 2007 Chevy Impala, and E85 ethanol fuel capability on the 3.9L V-6 offered in the '07 Chevy Uplander. "The application of Active Fuel Management™ (AFM) and E85 ethanol offers customers more choices when it comes to selecting efficient, fuel-conscious vehicles," said Peper. "E85 fuel reduces the need for petroleum and helps reduce greenhouse gas emissio…
Last reply by loki, -
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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…
Last reply by carguy10101010, -
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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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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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…
Last reply by thegriffon, -
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just an "experiment"... say delta's get a DI 2.2 or the 2.2 is replaced by the 1.4L T .... assuming the 2.8L is too big for the platform, hypothetically do you think there would be a market big enough to build a 2.9-3.2L V6 IC-VVT DI'd OHV engine putting out ~220hp ~210ftlbs as a "sport", not a SS? obviously this is an IF they don't keep the 2.4 or don't upgrade it in the near future....
Last reply by Drew Dowdell, -
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AS you all probably know the 08 vette has the new 6.2 450 hp LS3 v8 standard replacing the 6.0 400 hp LS2. Anybody know anything about the LS3 besides the 450 hp figure? Tourque, redline, power band etc? Does it have DOD or VVT or both? What cars do you think it will end up in as all of the recent LS2 cars are dead. No more SSR, GTO, or CTS V. The future CTS-V is supposed to get at least 500 hp so this engine won't end up there. Will this be exclusivley a Vette engine? What do you guys think...
Last reply by dwightlooi, -
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GM Sequel, Part II GM to build the Sequel, its hydrogen fuel-cell car, claiming it has increased its range to 300 miles and 0 to 60 mph in under 10 seconds Way back at the start of 2005, the world's largest automotive manufacturer, General Motors, showed the Sequel advanced hydrogen fuel-cell concept vehicle at the 2005 North American International Auto Show (NAIAS), billing it as the culmination of US$1 billion of intensive research it had conducted into fuel cell technology. Like most show cars, the Sequel was not a working model, but now General Motors Chairman and CEO Rick Wagoner has gone on record as saying "the most technologically advanced car GM has ever b…
Last reply by Sixty8panther, -
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The Problem Direct injection, as many of you know, allows for charge cooling, more precise fuel metering and a higher degree of atomization. This consequently permits a higher compression ratio to be adopted which in turn affords greater fuel economy and higher performance. Sounds good right? Well, there's a catch. Direct Injection also presents a few problems... Noise from the injectors Carbon fouling of the intake valves, intake tracts and/or throttle assemblies. The reason is simple. Every engine has some degree of blow by past the valves when they are closed and many deliberately circulate exhaust gases into the intake side -- via valve event overlap and/or EGR …
Last reply by dwightlooi, -
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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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other than the cost to implement it, would there be any benefits to make an OHV&C engine? say... OHV for intake, 2 valves and vvt. OHC for exhaust, 1 valve and vvt. : or vice versa yes, i bet there would be packaging problems on the front of the engine and in the heads/valve covers... oh well anyone else thought of this or any other "crazy" engine designs? should this be in tech section? edit:changed an accidental smilie
Last reply by 91z4me, -
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anyone have insider information on what the next revised engine announce ment will be? the last 2 have been the 3.6L V6 getting DI and before that was the.... 3.9L AFM or the 2.0L turbo DI. right? will the next be an ecotec update? an LSx engine, or something else?
Last reply by dado, -
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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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link here
Last reply by dwightlooi, -
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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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All right, since this is completely opinionated here.....I personally believe that a bulletproof engine/transmission combination is the Chevrolet 350 strapped behind a THM400 transmission. Great power, reliability out of this world and simplicity all day long. Now y'all take a swing at it. What do you think is the best engine/transmission combination to be used by General Motors so far?
Last reply by ToniCipriani, -
Tuner
by furioustee- 2 followers
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WIll installing a tuner on my 2009 Ford Ranger XLT, make a huge difference on its performance? I am planning to purchase a Superchip Tuner for my truck.
Last reply by G. David Felt, -
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So, I just had my battery replaced in my 2000 Pontiac Grand Prix with the 3800 in it and my SES light came on. How long should it take for the computer to reset? Or is there a way i can find the code to see if there really is something wrong with my car? I made sure the gas cap was nice and tight.
Last reply by Justin Bimmer, -
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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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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…
Last reply by dwightlooi, -
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will the larger atlas 4 and 5 cyliders mean a larger 6, more to about 4.4L? and would this make closer to the tune of 310hp and roughly 290ft-lbs? factoring DI in, would this make the base v-8 ( 4.8L ) not needed at all? other than the silverado and other gmt 900's, any other possibilities of this engine configuration? any insider have any info along these lines?
Last reply by 76ChevyTrucker, -
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For your reference, click here to see which General Motors engines are SAE-certified.
Last reply by Flybrian, -
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Well now its becoming apparent it might not be realistic to keep driving the LSS with its size, weight and engine requireing 93 octane So Im looking at the Chevy site and see no listings for EPA milage on any of the models. I go to the Pontiac site and I see the 2.4 powered Solstice is 20-28 EPA. Now that is no better than the LSS except I dont need to buy premium gas, and as much as I'd like a Solstice its not half the car as the Olds... So I was wondering where to find a list of GM's EPAs on various new product.....or can someone give the EPA's to me right here or make a list on a new topic for a sticky in this powertrain forum.
Last reply by pow, -
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Seeking to tap Dwight's knowledge here..... In terms of engineering and manufacturing costs and tradeoffs, technology vs. technology.....I want to throw these scenarios out there and welcome others to throw out some scenarios of competing powertrain details for evaluation..... Or also in terms of weight and design and performance. On the Cruze for example. The 1.4t does not have DI. Yet it has turbo. In terms of providing the most power and fuel economy for the projected sell prices, was the turbo "in lieu" of DI? i.e. was the turbo and DI about the same cost but the turbo provided more power and FE for the same price? Likewise, A car with a V8 and rear drive o…
Last reply by dwightlooi, -
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clicky
Last reply by G. David Felt, -
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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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http://www.popsci.com/cars/article/2010-11/new-technology-uses-auto-engine-exhaust-generate-electricity
Last reply by Drew Dowdell, -
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diesel info Low NVH for New Duramax 4500GM's new light-duty diesel to be quiet, clean By RICHARD TRUETT | AUTOMOTIVE NEWS AutoWeek | Updated: 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 th…
Last reply by thegriffon, -
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is there any engine other than the 3.9 with the active intake? is there any proof or good rumors it's going to make it into more engines? side question... would that not do much if anything to inline engines power band?
Last reply by razoredge, -
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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To date, gasoline-electric hybrid vehicles have been designed primarily with improving fuel economy as the primary goal. Although some implementations -- such as those in the Lexus LS600h and RX400h -- have sought to create vehicles with no compromises to performance or even a little gain in this department, no hybrid vehicle to date has been designed with improving handling dynamics as the primary goal and with economy gains as a secondary (but very tangible) benefit. Here, I propose such a concept. Concept Premises:- (1) Hybrid drive trains can be used to enhance handling as well as improve fuel economy. (2) By adding two motors directly to an open differential, we …
Last reply by Drew Dowdell, -
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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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Ok, we know that GM's had a substantial investment into their transmissions - with the 6speed fwd and 6speed rwd just hitting the markets. The Allison transmission simply cannot be beat. For engines: 6-speed pushrods: I know that the 3.5l (as used in the Impala) and the 3.9l have been getting active displacement & variable valve timing. 6-speed DOHC: The 3.6l variant of this engine is rumored to be getting direct injection - and should push around 300hp. I haven't heard anything about the 2.8l, 3.2l. This engine was designed so that you could have different bore sizes through the use of cyl. sleeves. It can displace anywhere from 2.8l to 4.0l. I'd imagin…
Last reply by Dsuupr, -
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just curoius what every one thinks the most power N/A the 3.5 and 3.9 could do with things like direct injection, 3v, "performance breathing"? mine- 3.5L - 270hp 250lbft 3.9L - 310hp 270lbft
Last reply by Bizz, -
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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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I thought you guys might be interested in the engine that one of the tuners I know on an Australian forum has built for his street/strip car. The engine isn't run in yet, so the revs have been limited to 4500 and the boost is currently capped at 10 psi, but even with those restrictions it's producing 455 rwhp at 4500rpm running through a T56 6 speed. Once its run in, he'll be winding up the boost and the revs. He's aiming for 700 rwhp on pump fuel and 10 second 1/4 mile times. He runs this place: http://www.castlehillexhaust.com.au/ and there's lots of other interesting stuff in the picture gallery.
Last reply by 76ChevyTrucker, -
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So I searched Google and found some stuff on the LS3 in the '08 Corvettes and got some interesting stuff... They're dynoing bone stock around 385 RWHP. CAI adds 10-12 WHP, headers are another 40 WHP, and a cam is about 60 more WHP. The heads can be ported to flow about 10% better than the 320 cfm they do stock. A Procharger is helping significantly with 150 WHP and 120 ft-lb extra on only 5-6 psi (for bone stock engines). So if I'm reading this right... upgrade your Camaro SS's lower end, add some loads of money and work, get a tune, and dyno in well over 600 WHP.
Last reply by SuperSport623, -
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of course it's a tad jumping ahead...(ls3 reveal saturday?) what will the ls3 have improved over the ls2 (other than displacement and power)? will this mean anything quickly ( by 09my) for the high value v6's? those v6's seem like a good thing for the Vue XE, the aura, g6 and the impala, for being a mid level engine. with the 08 malibu losing it's 3.5L (as of right now), will this engine continue in the "NG" Aura/G6? the impala is questionable with the zeta replacement being .."reevaluated" the 3.9L has pretty much been designated an impala (excluding the uplander) only engine, but when the 3.5L recently got the tad HP boost, why not the 3.9L? i know the 3.9…
Last reply by 91z4me, -
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before it's mass produced: could we see VVT like the 08 viper's engine? 3v/cylinder? potent closer to 350+hp and ~320lbft? *dreaming* a 3.2L (just a number gm hasn't made for OHV, in usa) or 3.7L (lop off 2 cylinders) V6 giving ~250HP or ~290hp respectivly and +1-2 MPG over current OHV v6 engines with ~6.5K redlines or turboed for 330hp / 360 hp just rough estimates (not using a calc for power gains) are we still going to have to wait for 3+ years for this v8 or will this tech be pushed up? ...maybe 2 years from now?
Last reply by dado, -
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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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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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What is the recomended octane for use in these new "HF" engines
Last reply by razoredge, -
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The SAE techbriefs is a can't miss favorite of mine to read. The April 2007 edition shows you why: http://www.sae.org/automag/techbriefs/04-2007/1-115-4-22.pdf After you read the interesting article on GM's 2.9l V6 diesel PCCI (pre-mixed charge compresion ignition) technology, scroll on down to the end of the article & read about the Viper's V10 with cam-in-cam variable valve timing. Note the quote in the tail paragraph:
Last reply by cmattson, -
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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…
Last reply by chevelle454, -
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I have a rented Monte Carlo for the Easter weekend with a OHV V6 with VVT (variable valve timing). Both the 3500 and 3900 in the MC/Impala have VVT as of this year. How does this system work? Is it an electronic chip? Can it be expected to function trouble free for a long time? The whole concept sounds complicated. Care to shed light on VVT if you know it /understand it?
Last reply by Ghost Dog, -
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Slipstream Drive The Slipstream Drive is primary propulsion pack for the Chevrolet Slipstream diesel-electric hybrid. It combines the most efficient internal combustion engine with innovative energy recovery measures to achieve a 75 mpg fuel efficiency target without the inconvenience of a plug in. The power train is also designed from the outset to be roughly half the cost of the Voltec powertrain – through halving the number of electric motors and quartering the battery capacity. The Slipstream drive is designed to be more refined than conventional diesel propulsion by eliminating idle operation of the diesel engine. The diesel engine is coupled directly to the 9-sp…
Last reply by dwightlooi, -
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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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Help please; This note in my Operator's Manual describes what my car is doing perfectly: "If your vehicle accelerates sluggishly from a stop, and/or the automatic tranxaxle does not seem to shift, a sensor that controls your electronic transaxle may not be working. Driving with these symptoms for an extended period may cause transaxle damage." My question is, How can I find and replace this sensor? Any help would be appreciated. I do not have a service manual for this car. Thanks, Dick
Last reply by shanahand, -
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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 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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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, -
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Could, in theory, the supercharger from the 2.0L S/C Ecotec (Cobalt SC/SS, Ion Redline, et. al.), or any of the aftermarket stage 2 or stage 3's meant ofr the S/C 2.0L fit on the N/A 2.2 or 2.4 Ecotecs with very little or no modification to the mount points or TB? I would assume that all the Ecotec engines are the same on the outside, and that a retrofit installation would be somewhat direct. Are there differences in the throttle bodies and mount points that would prevent this?
Last reply by loki, -
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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?
Last reply by CanadianBacon94, -
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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, -
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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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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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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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, -
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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 …
Last reply by thegriffon, -
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How will you spec a small car engine -- such as one for the Astra or the Cobalt? If it is up to me it'll be as follows:- Displacement: 1800 cc Bore x Stroke: 88 x 74 mm Construction: Aluminum block and heads. Harmonic compensation: Twin Lanchester type balancers driven by timing chain. Compression ratio: 10.8:1 (12.8:1) Aspiration: Normally aspirated with 4 port mounted intake butterflies and trumpeted velocity stacks. Valvetrain: Chain driven DOHC 4-valve per cylinder with continuous intake/exhaust VVT Fuel injection: Direct gasoline injection with 50~150 psi variable pressure rail Maximum engine speed: 7500 rpm (8,500 rpm) Maximum piston speed: 3642 …
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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I have a gm transmission that appears to be some type of 350 turbo it is marked with an MV3. I am trying to rebuild this tranny but cant seem to find these letter designations. Any help or info is greatly appreciated.
Last reply by amadeusphineas, -
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I can't find the weight figures on any of the ecotec engines, help me.
Last reply by GTO 6.0, -
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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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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Testing GM's `Sequel' Fuel-cell concept vehicle peppy, smooth, silent But fuel tanks, batteries make it unusually heavy Sep. 25, 2006. 01:00 AM LINDSAY BROOKE NEW YORK TIMES NEW YORK—If an afternoon behind the wheel of General Motors' latest prototype hydrogen fuel-cell vehicle, the Sequel, is any indication, powertrains of the future will not feel much different from the engines that drive today's cars and trucks. By a seat-of-the-pants evaluation, the Sequel feels reasonably peppy; acceleration is smooth and nearly silent. And it is capable of reaching 90 miles an hour, said Mohsen Shabana, chief engineer for the Sequel program and my passenger. More important…
Last reply by Flybrian, -
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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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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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General Motors will inaugurate its newly built engine plant at Talegon on November12th 2010. The new flexi-engine plant, is the first of its kind and can produce both petrol and diesel engines. The commercial production of the New Talegon Engine Plant will commence on November 1st of this year. GM has invested $230 million in this plant which has the annual capacity of 1.6 lakh engines. GM's new engine plant will manufacture four engine variants. The first engine variant will be a 1 L engine that will power GM's Beat car. Beat will be the first car model to get a locally made diesel engine from GM. Chevrolet Beat diesel will be launched during the first quarter of next …
Last reply by 67impss, -
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I havent posted much here but i thought some of u would enjoy this car as much as i did. http://home.earthlink.net/~bzdel/index1.htm http://www.ls1tech.com/forums/showthread.p...295#post4877295 <<---track runs
Last reply by Carguy, -
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All right, someone help me out here. I've got a friend of mine with a 2002 Dodge Ram 3500 4-wheel drive Cummins Turbo Diesel duallie. He's also a truck driver and currently has a Peterbuilt with a Caterpillar 3406T, but is planning to remove the Cat and swap in a Detriot Diesel 60-series in. He's wondering the feasibility and power improvements he'd see with removing the turbo from the Cummins in his Dodge and replacing it with the Caterpillar one.... I have no clue on this one y'all, so I'm open to suggestions.
Last reply by 76ChevyTrucker, -
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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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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?
Last reply by ToniCipriani,
