Quote Originally Posted by 29chev View Post
has a mild cam. The compression is about 11/1. has a single plane intake on it.
Wrong plus wrong equals wrong.
11.0:1 static compression ratio plus mild cam equals detonation on pump gas.
Single plane intake equals inferior cylinder packing and less power than a high-rise, dual-plane under the torque peak where you do most of your driving with a street motor.
Further, if you didn't know any of that, I'm pretty sure you don't know anything about the block deck height, piston deck height or squish of your motor. If the squish is excessive, you'll never get it to run on pump gas even with a cam change in my opinion.

Here's a tutorial that I wrote for another forum, after extensive research into the camshaft/compression ratio question.....
http://www.crankshaftcoalition.com/w..._compatibility