Quote:
Originally Posted by wbt
LS3 yes and streetability is just fine. Nothing radical. Texas Speed has done this along with several other vendors on this site. Daily drivers.
Intake is good for 15WHP
Exhaust is good for 35WHP
Cam is good for 80WHP
Porting is good for 25WHP
This is all with a tune. Pretty easy to get 500WHP with those mods. Picking the correct combination is critical. 
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I imagine it can be done, but I doubt it can be done with ease. You don't get 35 whp with exhaust and you are very lucky to get 15 whp on an intake, even with a tune. I haven't heard of any cams that give you 80 whp. Porting probably can give you 25 whp. But the main thing is, different components don't add their horsepower together like that. Their individual power gains kind of blend together to make the total power output of the package.