Internal Magic
07-31-2005, 04:50 PM
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Internal Magic Has anyone seen improvements in power with stuff like new pistons, valves, valvesprings, pushrods, etc. on a stock or close to stock Ls1. Just curious if there is that much room for improvement. 
07-31-2005, 05:29 PM
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for a stock motor I am not sure i dont think that anyone has tested a stock motor with forged internals and stock everything else. I believe that Force Fed performance had a stock everything firebird and put a turbo on it and b/c the motor had like 100k miles on it the valve springs were wore out. they gained a few with a spring change. but on a stock situation, your guess is better than mine.