Catching up after a three weeks' computer outage, I came across the Oct. 13-14 exchange on distinguishing between B20E and B20F engines. Shayne's identification clincher, the rectangular casting trailing forward from the center right head bolt hole, revealed to me that the E head I acquired to use with carbs on a B20 block is actually an F. I had planned to use the supposed E with the thicker F gasket to get something like a 9.5:1 CR. I know I can have the F head shaved to E specs and get the same results in the same manner, but does anyone have any idea what sort of CR I'd end up with if I used the F head, unshaved, with the thinner E gasket?
Bob