Thanks for the ideas on the -092/3 heads. Much appreciated.
B-Man: I've re-read the thread on your 421 build at least a dozen times, learn something new every pass, much better and more complete than most magazine stories. Hope the mill is putting the convert into orbit.
Question on the early head, because so few people even mess with them other than a straight rebuild: Is there any gain "unshrouding" the intake by laying back the chamber wall a bit? Thinking a gentle cut could pick up some breathing room, so to speak.
Also, for a 'zero deck' build, what is the minimum safe clearance between the piston dome and the deck surface. Know that it all grows when warmed, wondering how much will still leave room for thermal expansion, carbon buildup, etc.
I will need therapy to cut the decks on my block; they still have the factory over/under markings on the deck from the trip through Plant 9 lo those many years ago.
Thanks for the knowlege and patience!
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