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Old 01-02-2013, 12:23 AM   #16
Roadkillz
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Quote:
Originally Posted by alexandro777 View Post
If Gm is were going to down size i only hope that they resurrect the 5.7l (350ci)

Personally i think the new LT1 have a lot more potential and GM is not saying.

I am under the impression that this engine will love to rev And with some minor modification it could rev high or higher the LS7
One thing thought that I think people miss on is if GM is going with smaller displacements (yet to be seen just the opposite happened) it doesn't mean they are going to make a new engine all together. Its still going to be based on the Gen V small block with the same center bore spacing and all.
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Old 01-02-2013, 09:36 AM   #17
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I suppose your right... so then it would be pointless to create a 5.0 or 5.5 or 5.7 since you would retain the same basic size and weight... just use the biggest displacement...
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Old 01-02-2013, 11:39 AM   #18
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It seems unlikely they would actually make a completely new casting requiring different dimensions for the attachments. If they use, essentially, the same block with smaller cast-in liners, the block for the lower displacement engines would be just a little heavier ... but the pistons could be lighter.

They could just de-stroke it, but that would likely deliver lower than desired torque.
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Old 01-02-2013, 03:57 PM   #19
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I saw some LT1 cam specs somewhere and I wasn't sure they are real or not. If they are it's not very big.
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Old 01-02-2013, 07:13 PM   #20
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I saw some LT1 cam specs somewhere and I wasn't sure they are real or not. If they are it's not very big.
I remember seeing the cam specs and the cam isn't very big at all, which is probably what is holding the power/torque back.

On the flip side I remember an old hot rod article where they wanted to push a 5.3L engine to its limits. They pulled a 5.3L truck engine out of a junker, the engine was in poor shape. They got it running once more with some work done to the heads and a different cam. They then put two turbos on it and started to push the boost up, after a bit over 26psi of boost they broke the 1,200BHP barrier. After that run on the tear down the notice something off about the engine. They looked at the casting and realized that they were actually working with the 4800 vortec and not the 5300 vortec (4.8L instead of 5.3L).

The Generation 4 small block V-8 engine is an extremely impressive family of engines which are very flexible. They can be used in trucks to do work, and they can be used in race cars to win races. The Chevy Small Block V-8 is the most holds the distinction of the most victorious engine in the world period. To top that off some people even report getting 30+MPG highway with their 7.0L 505BHP Z06 Corvette. If GM stuck with the generation 4 Chevy Small Block V-8 engine for another 5 years it would still be a highly competitive engine, its that good.

However they decided not to do that, instead they gave us an all new engine with some major improvements. This new engine is going to give us amazing horsepower/torque and fuel economy. Everything that the Gen IV engine was the Gen V engine is but better.....
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