Quote:

Really, I thought that there were three 915 heads out there if you will. The small exhaust valve and the big exhaust valve heads and then there were HP's and of course those had the big valves?



There are 3 versions on the 915 "J" heads in the smal block world.

Big intake 2.02
Small inake 1.88

And then the T/A heads with the big intakes with the off-sets pushrods.