Quote:
Originally Posted by nester7929
From what I've heard, nearly all the power loss from the LS3 to the L99 is because of a restrictive exhaust system. An aftermarket should basically turn it into an LS3.
I think.
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My best educated guess on the 26 hp power losses would be :
10% due to lower compression (10.4 vs. 10.7)
30% due to more restrictive exhaust
60% due to less aggressive cam profile
…perhaps some of the programming accounts for some, but I have not heard any concrete info on that.
For what it’s worth
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