Thread: How much compression have you guys got away with on pump gas?
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Old 10-09-2004, 10:36 PM
Excaliber Excaliber is offline
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12.5 to 1, iron heads, freakin' nightmare on the street. Out with old pistons, in with new dished ones so I can keep my 1964 high riser iron heads (I like 'em). Shooting for 9.5 or 9.8
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