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Generation III Internal Engine 1997-2006 LS1 | LS6
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need help identifiying piston

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Old 06-03-2009, 01:48 PM
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Default need help identifiying piston
i just pulled my head off and want to know what pistons are in my car if they are stock or not the numbers i found on them is 56-026 then below that
5997612 0.50 then on the header side 040 below that looks like ITI below that 0336 any help would be great

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Old 03-26-2012, 09:54 AM
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I have the same pistons except for 0.75 mm so hat pistons are they? Speed pro?
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Old 07-26-2015, 09:51 AM
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hate to drag up an old thread,but I have the same exact ones and wondering if anyone had info on these
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