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Old 02-26-2019, 03:39 AM
67ragtp 67ragtp is offline
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can ls7 heads run on that block?, im thinking the bore size is too small?
thanks Rich
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Old 02-26-2019, 06:52 AM
will69camaro will69camaro is offline
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Almost positive the LS7 head requires a 4.100" bore, so the LS9 (4.065") wouldn't work without machine work being done first.

Quick search and it seems a few people have made the heads work, but it required smaller intake valves and at that point why not just use a different head.

William
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Old 02-26-2019, 12:14 PM
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On the Summit link from above it states..... Notes: Block includes iron sleeves, and 8 oil squirters for piston cooling. Not for use with LS7 or LSX/LS7 heads.
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Old 03-09-2019, 04:58 PM
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People have run LS7 heads on 4.065" blocks; however they require offset dowels/slight cylinder head offsetting... I personally have not done it; however read about some that have. I guess it is the exhaust valve that is the issue and not the intake!

My block showed up! Woot woot. Time for more whooshing sounds.... meaning money flying out my wallet.
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