They sure will. GM shoulda been whipped for those aluminum/plastic timing gears!Will 1980-86 305 heads fit on a 1971 307 ? Casting Number 14014416 . Upper (aluminum) timing gear stripped. Bent vavles but did not damage pistons. Thanks!!
Be aware that all the shredded plastic from the cam gear ends up clogging the oil pick up, so if you can remove the pan and clean the pick up screen real good or just replace the oil pump and pick up w/a new one. You don't need a high volume pump for a mild build, the standard volume pump is fine.