Quote:
Originally Posted by 98tadriver
im pretty sure you misread something. guys put 5.3 heads on their LS1s. and theres no way a 5.3 is going to put down the same numbers as a LS1 lol
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Depends on the comparison. Stock LS1 vs. Modded 5.3, I have heard 5.3s doing 400 crank hp.
I think he is looking at cost per HP here, and the 5.3 can be a low$$ way to do a retrofit. But you have to consider all the extra costs - fuel system, exhaust, etc. I'm not sure he has considered that only because he has not addressed that here. It's cheaper to do this for a 3rd gen than an old car because the 4th gen fuel tank and such can be used.