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4" bore block with ls1 style heads

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Old 11-19-2008, 08:26 PM
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Default 4" bore block with ls1 style heads

I have a pair of 60cc, tfs "as cast" heads designed for an ls1. Would I run into any problems using a stock LS2 or L92 shortblock? Would the chambers have to be enlarged? This probably has been covered before, must not not be searching with the perfect combo of words TIA-Garrett
Old 11-19-2008, 08:30 PM
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You could open up the sides a little. Will help unshroud valve and get you a little more flow. You will reduce your compression a little with the larger chamber.
Old 11-23-2008, 09:13 PM
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im running a 3.90 bore head on a 6.0 with no issues.
it does shroud the valve a lil, but i got a deal on them.



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