Loves302Chevy
"One test is worth a thousand expert opinions."
I'm sure somebody else has run into this problem: Perf RPM heads 60739 - after blending the intake ports on these heads, the outer walls are now very thin. The ports now look like the attached images. When I put the heads on the block to measure for pushrod length, I found that some intake pushrods rub on the outer walls of the intake ports not allowing the roller on the rocker arm to be centered on the valve stem (even without the guideplates installed). Since the walls are already paper thin, I cannot grind for clearance. So I ordered .150" offset intake rockers. I know there are adjustable guideplates available, or I can cut and weld the ones the heads came with, but my question is does anyone know of a guideplate that is already made for .150" offset intake/standard location exhaust using 5/16" pushrods? Thanks, Mike.
