450rwhp through an a4?
If you start with a 402 like you indicated, 450 rwhp should be easy to get. With a good set of heads, you should get at least 500 rwhp...

oh, well, through my 408 a ls6 manifold and ported tb (im still with a ls1 manifold/tb...) i should be able to hit 480ish at the wheels. Now, maybe i could get 490.....maybe stretch it to 500rwhp with a 90mm setup and a hell of a tune....
oh yeah, and no false knock!!!!





