The Stovebolt Site Forums The Shop Area Engine Shop 305 V6 Head?

Hmmmmm..Lots of casting numbers, probably for lots of applications. I'll measure the valves and compare with a head with my number.

'Anybody know where one might find an explanation of the differences?

Or, I know they're not like small block Chevies, but Where's THE source, if any, for info on all things GMC V6???

Thanks, The Search Is ON.