Quote:
Originally posted by Steve R
carnut,
I thought the Zl-1 employed 2 studs in each head that go into the valley on each bank like the late Hemis employ 4 studs in each head that go into the valley on each bank. Are you sure? That's the first time I've heard of a cap on top of the runner (s) to access a head bolt (s) on the ZL-1.
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I'm sorry, Steve, my error. 2 extra head bolts are installed per side through intake ports in the heads as I described when installing symmetrical-port heads on the BB Chevy, not on the ZL 1 or any siamesed-runner BB heads. Page 49, "Big Block Chevy Performance." This gives 6 bolts around each cylinder instead of 5.
I stand behind my explanation of different length stacks on IR manifolds for the BB Chevy.
If anyone is interested in Chevies (gasp!), I suggest the Performance Related forum.
http://www.chevytalk.org