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Old 01-23-2020, 11:27 AM
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Rocky 389 Rocky 389 is offline
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Join Date: Feb 2004
Location: Bellevue, Nebraska
Posts: 310
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......and you don't need to restrict yourself to early heads if you don't want to. I've got late heads on my old 347 punched .125 to 370. Still using reverse cooling. Not a lot to it.
Advantages are larger ports/valves, screw-in studs [I used big block 7/16ths chevy studs] and pushrod guide plates. Down side is lots of CCs. I think my 73 GTO heads are 98 CCs so to get decent compression I used Jahns pistons with a nice "lump" on them. Rockers oil up through the pushrods.

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