5.3 PRC Stage 2.5 with MS3?

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Dec 26, 2007 | 01:17 PM

sedanman

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From: Indy

5.3 PRC Stage 2.5 with MS3?

Does anyone know if PRC 5.3 2.5 heads will work on a stock ls1 with a MS3 without flycutting the pistons? Also what kind of compression does a set of 5.3 heads yeild on a stock motor. Thanks.

Dec 26, 2007 | 01:39 PM

5.3LJimmy

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From: Napoleonville, LA

Static compression is 10.7 if the heads have a 63cc chamber(which I think they do). Best thing to do is call or email Jason at TSP and ask him to verify the combustion chamber volume and if it will work with the MS3. It seems like I remeber seeing a thread that said it will clear, but I would ask Jason to make sure.