[Senator350]

but, besides that mess.... 68 or later, because you have acc holes on heads, pre 81 because of dipstick location, 73-74 because of alternator and accessory locations... what year did GM start casting numbers behind the alternator? If you can't find any, then they are behind the drivers side head... VERY hard to get to/see.

1 vote for 350 because of rams horns, 1 vote for 350 because of ballancer, couple votes for 327 (don't know why)