comp 280 magnum or mp 280 cams can't decide!

Porting a smog head to a J head is a misinformed statement.

Use of a RPM and a Holley will seriously out perform the TorkerII & TQ. With the similar ported heads as the mag. Article shows, my suggested way will net approx. 20 HP greater on the big end. Take it from the been there done that guy. OH! P.S. I like a TQ more than a Holley. And yes I run TQ's over a Holley. But not every time.