Never went 1 1/4 (or .052 preload) before on other cams, but its what Comp is recommending. I remember reading article some years ago on a build for a 440, they went to .065 before they found the right preload.


I made the adjustment to 1 1/4 and started the car, ran for about 10 seconds and then it just shut down, no spark, the Pertronix took a crap, how nice.., got a new one coming.