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Holly says 5/7 psi there full of it on a 4bbl yes 2bbl no I seen tons of you tube vids of guys complain about there needle and seat fail due to high psi fuel pump on a Holly 4/5 Max I'd all you need Edelbrocks carbs same thing
I bought mine on Amazon with the part number if you buy one don't by Mr gasket one heard alot of bad reviews but could be they installed it wrong .
Just received my New Holley Electric Fuel Pump 12-426 1.5-4 psi 25 gal/hr
Hey SoCal, Do these make noise? Could I mount it in the cab or better underneath on the frame?