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flatheadmurre · 06-23-2019, 03:09 AM

The -37 blocks usually take even 3 3/16 + .040 but boring it for a 3 3/16 sleeve is like you should try to bore it for a 3 3/8 piston...
Sleeving a 3 1/16 with a std sleeve and boring it to 3 3/16 you end up with a very thin sleeve....

06-23-2019, 03:09 AM	#16
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: 21 stud cam installed in my 59AB The -37 blocks usually take even 3 3/16 + .040 but boring it for a 3 3/16 sleeve is like you should try to bore it for a 3 3/8 piston... Sleeving a 3 1/16 with a std sleeve and boring it to 3 3/16 you end up with a very thin sleeve....