302 heads smog ports.

RedFish said
Those heads are not compatible with some of the earlier exhaust manifolds without some grinding. I don't know if this applies to your build, Just thought I would mention.

Redfish...good point! Test-fit your manifolds to check for interference areas.

rustytoolss said
Whats a grub screw ?

A small set screw, usually with an Allen-type head.Use Loctite, silicone sealer, or teflon tape for sealing.