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  1. Stuff - FOR SALE
    Casting # 10239906 ('96-up, Vortec 5700 L31 Iron Head). 64cc chambers, 170cc runners Valves are 1.94" intake / 1.50" exhaust Only got the one head. Ideal spare/stock replacement or good alternative to aftermarket stuff. If you know SBC heads, you'll know that the Vortec outflows even...
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