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#1
12-25-2011, 06:34 PM
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head gasket question
are all pontiac head gaskets interchangeable?350-455?
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#2
12-25-2011, 06:51 PM
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No.
The smaller bore sizes call for a smaller fire ring that corresponds with the bore size. If you use a 350 gasket on a 455, the gasket will over hang the 4.151" bore (or larger after boring) and cause hot spots (detonation) and sealing problems. Using a 455 gasket on a 350 will cause combustion/efficiency issues with the large fire ring that is way too large for the 3.875" 350 bore size. |
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#3
12-25-2011, 07:45 PM
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thank you Bman,i had an open gasket set and i put 350 gaskets an my 455 lucky i can fix this ,the engine is out.You are a lifesaver(wintogreen) HAHA.
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