Originally Posted by sherwood
the b16 and b18c5 heads are from the same casting... the c5 has a major port job though.
the b18c1 head is different than both of them and yeilds a higher compression than either.
Blah blah blah, the compression being greater is achieved by the pistons, if yu tore one down yu would tell the diffrant between the pistons.
its 2 early in the morning for this BS