*cough*DOHC*cough*
While previous speculation had the new small block pegged at 5.5-liters, GM says they went with a larger 6.2-liter displacement because of the advantages of cylinder deactivation, which effectively has the LT1 operating as a 3.1-liter V4 under lighter loads. If GM had made the engine's displacement smaller, the V4 mode wouldn't have provided as much power, and thus drivers wouldn't have the engine operating in cylinder deactivation mode as often in daily driving. By operating in full-on V8 mode more often, GM would have negated the efficiency benefits of going with a smaller displacement.
it seems like natural progression, but IMHO 450 hp out of 6.2 liters is nothing to right home about.. I am sure they will be able to get more out of it, but a big engine should make big power
so's the VQ that the comparison was made to...
Good Lord. The comments on the Autoblog article make my eyes bleed. Why do I even bother reading the comments after the article?
We're coming up to a massive inflection point in the auto industry. A new Corvette for the masses. And new flagship garage queens from Porsche, Ferrari, and McLaren. That's an assload of horsepower coming out in the next year.:awe:
And no I'm not disappointed with the early specs from the LT1. I bet the official specs at the Vette unveiling will be noticeably better.
I just expected more gains out of going DI.
DI helps fuel economy more than power. You can go ultra-lean without getting extreme temps.Intake and bigger injectors nets you little in the way of hp on the ls motors. Cylinder heads, headers and cams are what modders throw at them for power. The engines in their current form are getting more than enough air and fuel. Going to forced induction is when the intake and injectors start to get taxed.
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that would be my expectation as well. i imagine the 450hp might be for the truck application. my completely unsubstantiated guess would be somewhere around 475-500hp for the corvette.
Now emissions and efficiency regulations are killing the weight/compactness to usable power ratio, which is really all a performance engine is about.
None of those engines are IDEAL performance engines because they use forced induction.
I have a suspicion that the golden age of engines passed some years ago. Now emissions and efficiency regulations are killing the weight/compactness to usable power ratio, which is really all a performance engine is about.
Are you just making things up? Only *2* of those engines are forced induction.
I can forgive throwing on a supercharger to get 580 hp and 662 hp.
edit: and that 662hp engine is in a car without even a gas guzzler tax.
I'd expect output to claim in the next model years as they flesh it out
I would think the base Vette would need to be at least 500hp to be competitive. They could then come out with the Z06 at 600hp and ZR-1 at 700hp+.
Reading this thread makes me realize I'll never understand the HP/L crowd. Please name some other engines that produce similar power/weight/mpg/price. I'll wait.
None of those engines are IDEAL performance engines because they use forced induction.