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4.125 Bore...What size head Gasket ?

7028 Views 9 Replies 9 Participants Last post by  outlawwdc
I have ran Fel-Pro for 15+ years and never had an issue, so I wanted to use them on the new build. I am currently building a 363 with a 4.125 bore size. Fel-Pro has listed available bore sizes of 4.145, 4.15, 4.18, and 4.20. What size should I choose ? This is a 8.2 deck SBF N/A set-up with Edelbrock Victor Jr. Any help would be great.
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I my self would use the 4.200 bore gasket .
Ford Racing M-6051-R351 - Ford Racing Performance Cylinder Head Gaskets

Ford Racing M-6051-B341 - Ford Racing Performance Cylinder Head Gaskets

Or I try to use the smallest gasket to fit the bore....That way you have the higher compression.
1134sd-4 felpro 4.180
Give yourself .030" & your good.
I'm going to run with a 4.190 gasket on a 4.155 bore if that helps you
1134sd-4 felpro 4.180
Yep. Had the same set of 1134s on my 454SBF for 3 years now. Zero problems.
Thanks guys, I got a little lost on this one.
cometic will make u any size you want, for my on reasons i keep the gasket real close to the bore, never had any issues, sorry just seen where u said u wanted to use fel-pro! need coffee this am lol
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