[Skippy597]

Originally Posted by Steve C.

" Going for a low revving 550hp."

Using KRE aluminum d-port heads ? And ported for your goal ?

Example here, un-ported KRE d-port heads and 60919 cam.
4.185 x 4.25"/ 467 cubic inches

502 hp at 5200 RPM

Nice low revving truck motor combo.

https://pontiacstreetperformance.com...d455MikeG.html

And another example, same cam and un-ported heads:

https://www.motortrend.com/how-to/05...-dyno-results/


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That's perfect, I don't really care about having to get 550, just thought it was a good goal to shoot for.