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  1. pntastar69

    9.1 PSI Carter M6270 Mech Fuel Pump

    Running a 360 w/a Holley 670 fed by a Carter mechanical fuel pump M6270. Supposed to output max 8.1 PSI. The one I just installed puts out 9.1 PSI Tried 2 different pressure gauges, same reading. blowin fuel past the needle valve seats and flooding the 2ndaries. I replaced the pump recently...
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