Quote:
Originally Posted by DGthe3
I knew of the reason, not the details. Also, when I was looking up related infor for that post I discovered another reason why GM's engines are under rated, its because of the SAE test protocol. it generates numbers that are about 5% lower than other engine dynos. So that would put the 430 hp SAE up to that 450 mark. Without doing a single thing. Learn something new every day . . .
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No kidding
Shoot, my intake/exhaust LS1 puts more than 360 RWHP down which is pretty close to 400 FWHP. Most of the crate engine tests of LS1s, with lont tubes, was near 400 horse anyways, so I definately see this trend too.
