Thread: Want to run pump gas in my 64 gto
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Old 01-03-2011, 09:59 PM
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classical Pontiac head section intake Exhaust Volume


63-64 421HO/389GTO 9770716 1.92 1.66 68 cc

in Wallace Racing

389 325/330/348HP 9770716 1.92 1.66 72 cc
421 350/370HP 9770716 1.92 1.66 68 cc

I always thought it was 68 so which one is correct ?

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