Replacing cam, want suggestions

70aarcuda said
if your magnum heads have studs in the them ....3/8 probably...any small block chevy 3/8 rocker will work.

wow, not sure but if so Ebay could be your friend, lol. There is lots of Chevy rockers on ebay. I never used those Magnum heads, I though this was a la shaft head. I have hear of Chevy's pulling out the studs at higher rpm use, the pressed in ones.