Chevy Roller Rockers

RustyRatRod said

If the camshaft he's running doesn't require a lot of spring pressure, he doesn't have to drill and tap anything. He can run this kit:

Crane Rocker Arm Guideplate Conversion Kits 36655-16

It's nice. I have it on the 302 going in RobKat.

Click to expand...

True enough, and I am one of those.:D
I'm running the Hughes 1110 springs with the 5/16 stock Magnum studs, but I am guessing the OP's Chevy rockers take a 3/8 stud.
There is also a stud that has the Magnum threads in the head with a 3/8 upper section for running Chevy rockers without drilling and retapping the heads.