dustin zosky

Hi I was wondering if any one can tell me what number ac filter has the check valve built into it, I remember reading it one time on the forum but don't remember what the number was. It's for a 427/390 engine. Thanks and merry Christmas to all!!!

MelWff

assuming you have the original Quadrajet, the filter in the carburetor with a check valve is GF470 in AC Delco brand.