Imo, there must be some fairly substantial limitation in the induction/exhaust system(and possibly combined with lowish CR) for none of those cams to get the motor to make 1hp/ci.
Agree. I have had quite a bit of experience with these mild SBC's back in the day and besides being 8.8 comp and the 1.94's, the biggest cork on that engine with the larger cams is the Performer. It's no better then a iron Q-jet intake.
I once swapped a Torker i had on the shelf on a similar engine with a [email protected] cam and the car picked up 3 1/2mph in the quarter.
