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Old 12-21-2011, 06:33 PM
72chevyBuild 72chevyBuild is offline
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740P pistons for a sbc 307

I was taking apart my chevy 307 the guy I bought it fron said it was 30 over but then the piston where not stamped so I had a .040 piston from a 283 an of course the share the same piston size but the 307 piston is bigger so now the only number I found was 740P feb 92 can some one help me
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