PY Online Forums - Bringing the Pontiac Hobby Together - What is freeze plug size on intake side of 6X head?

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- - What is freeze plug size on intake side of 6X head? (https://forums.maxperformanceinc.com/forums/showthread.php?t=438199)

stuffedfrog

07-06-2005 08:38 AM

When I measured this it seemed to be 1 3/16, but when I went to get it, the guy at my shop said his supplier doesn't even make a plug that size, so I bought a 1 1/4 one. Now I am afraid to put it in. It seems to begin to nestle into the hole ever so slightly, but not as mush as the plugs on the end did.

Jeff Walker

07-06-2005 10:22 AM

The diameter is 1 13/64. NAPA part number 219-3134.

buwalda

07-07-2005 04:53 AM

32mm will also fit, although it is about 0.010" larger. Used them many times in that location.

Mr. P-Body

07-07-2005 06:17 AM

Pioneer part number EPC-134 or EPC-134B (brass). Diameter is 1 13/64", as previously stated.

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