Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor

Bottom plugs

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FNG:
THATS THE ONE THING I DID NOT DO ON MY 1708XXXX CARB,DONT THINK THEY WHERE LEAKING,I DID CHECK THEM,BUT AS READING THIS POST.I WOULD LIKE TO KNOW WHAT SIZE TAP AND DRILL NEEDED FOR PRIMARY AND SECONDARY PLUGS.I DONT REMEMBER SEEING IT COVERED INDEPTH IN THE BOOK OR ELSEWHERE.

Cliff Ruggles:
We tap for 10-32 threads for the front plugs, and 7/16"-20 for the rear plugs (1969 and newer units).....Cliff

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