ToniCipriani

Larger Engines in the Corvette?

41 posts in this topic

Can anything bigger than a V8 be fit into the Corvette platform? I was thinking an XLR or Corvette beyond the Blue Devil, with something like a V12 or V16.
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Anything is pretty much possible. I've seen Buick 455 & Chevy 454 V8s in Metropolitans. But I believe it's safe to say Chevrolet will never put any more cylinders than 8 in a Corvette (or any other Chevrolet, for that matter).
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They did say the XV12 could fit in the Corvette, not that they would put it in the Corvette. But why doesnt the XLR-v get that engine instead of the SC 4.4? Are they just waiting until the Blue Devil is out?
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I thought they were going to produce it. There were some articles about GMs new performance engine plant, which builds the Z06 engine. I beleive they said they could make the XV12 and LS7 there.
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I bet the 8.1 big block would fit into the XLR. The N* is as wide as the BBC, but I don't know about height. It would be fun to try with a wrecked XLR. :D
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LS9: 554 cubic inch (9 liter) V8. 730HP, 700 trq. :D Or how about a mini V12 for Cadillac? a 4.0 liter V12 perhaps? If Mazda can have a 1.8 liter V6 and Ferrari can have a 2.0 liter V12 then why not a 4.0 liter or even 3.5 liter V12 for Caddy? Back in the days of the MX3 GS V6 I read a few articles about the future miniaturezation of engines in the upcoming late 90s... A 2.9 liter V8 pushrod Kappa Camaro that gets 40mpg and keeps up with a BMW 330? YES please. Then we could have a 3.0 liter "Northstar II" V8 for small Cadillacs. Or how about a 3.0 liter pushrod V12 Pontiac Banschee? :wub: Edited by Sixty8panther
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Or how about a 3.0 liter pushrod V12 Pontiac Banschee? :wub:

[post="21256"]<{POST_SNAPBACK}>[/post]


Yeahhh... instead of having a little ~300hp OHV 6500rpm V12 (given 242 ft/lb @6500) , lets go with a ~350hp DOHC 8500rpm V12 (given 220ft/lb @ 8500rpm). Edited by Teh Ricer Civic!
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What's there to not understand? :huh:

MT and R&T, among other rags said in the early 90s how the Mazda MX3 GS was going to be a trend setter. I drove one for a long time and to this day it's one of the few FWD cars I'd possibly buy again. Great concept: a destroked 2.5 liter V6 (1.8liter) in a car the size of a Honda CRX. Add to that the 5-speed and you've got a great little pocket rocket.


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Posted Image Edited by Sixty8panther
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Yeahhh... instead of having a little ~300hp OHV 6500rpm V12 (given 242 ft/lb @6500) , lets go with a ~350hp DOHC 8500rpm V12 (given 220ft/lb @ 8500rpm).

[post="21285"]<{POST_SNAPBACK}>[/post]


Doesn't DOHC make the thing bigger?
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Not displacement but it does increase physical size.

[post="21322"]<{POST_SNAPBACK}>[/post]


Yes that's what I mean. Originally fit but after conversion to DOHC it won't.
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Yes that's what I mean. Originally fit but after conversion to DOHC it won't.

[post="21324"]<{POST_SNAPBACK}>[/post]

Yeah when you try to make an OHV motor into an OHC it just ends up HUGE. I have a 3.4 DOHC and my wife's Malibu has the 3.1 OHV. Let me tell you the OHC is Giant compared to the OHV.
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I think the hood is too short to fit the V12 under the hood of the XLR. Also MT talked about GM having to make the hood longer in order to fit the V12, but I don't know if there's any truth in that.
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DOHC makes it a bit taller. and im still sure it would fit. OTHERWISE, you could use superlight valvetrain materials and drive the cost up a lot more to attain those revvs. id be thrilled if they made a cheap-o little sporty engine. like a destroked 3.9L- maybe displace 2.5L and revv to about 8000... make about... uhhh 200hp. Edited by Teh Ricer Civic!
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Doesn't DOHC make the thing bigger?

[post="21318"]<{POST_SNAPBACK}>[/post]


Don't forget HEAVIER. FOUR cams instead of one and double the valves and all related components. Pushrods kick ass. Simplicity, cost reduction, lower maintenance and weight savings are wonderful benefits. :)
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Don't forget HEAVIER. FOUR cams instead of one and double the valves and all related components. Pushrods kick ass. Simplicity, cost reduction, lower maintenance and weight savings are wonderful benefits.  :)

[post="21726"]<{POST_SNAPBACK}>[/post]


Yes, but not in small sporting applications, where high redlines rule the day, the added weight and size is offset by higher output attained by higher revvs.
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Yes, but not in small sporting applications, where high redlines rule the day, the added weight and size is offset by higher output attained by higher revvs.

[post="22183"]<{POST_SNAPBACK}>[/post]

Why destroke something to have to rev the piss outta it to make any power? Leave it at its current bore and stroke and make the same power with less stress. In this case the larger displacement motor is a better fit because they would have the same exterior size.

BTW 2.5L x 8000 rpm=20,000
3.9 x 5100 rpm=20,000
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From what I hear, you guys are going the wrong direction. I'm hearing 2008 will bring a 6.2l supercharged 'vette to the showrooms. Why the 6.2l? The 7.0's cyl. walls are too thin to support the boost. Anybody with anything more current?
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From what I hear, you guys are going the wrong direction.  I'm hearing 2008 will bring a 6.2l supercharged 'vette to the showrooms.  Why the 6.2l?  The 7.0's cyl. walls are too thin to support the boost.  Anybody with anything more current?

[post="22495"]<{POST_SNAPBACK}>[/post]


Yes there will be a LS9 that will have thicker cylinder walls and use the same MAG SC as the caddie CTS-V uses.
I doubt you'll see larger engine in fact GM will move to Displacement On Demand (DOD) which the LS2 was already designed to accept the DOD parts which will give more power and better fuel mileage.
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which will give more power and better fuel mileage.


[sarcasm]Yeah, that engine could really use improvements on both of those fronts[/sarcasm]
:blink:
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Cool, gotta stay ahead of the competition. :) Pushrods RULE!
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