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[Land-speed] Re Dumb Question # 4857 - Wrist Pin Diameters .

To: "LandSpeed List" <Land-speed@autox.team.net>
Subject: [Land-speed] Re Dumb Question # 4857 - Wrist Pin Diameters .
From: "John Burk" <joyseydevil@comcast.net>
Date: Thu, 24 Nov 2011 19:20:36 -0500
Mayf

I could make a pretty good guess . Word of Chevy developing a killer ohv v8 
leaked out . Ford rushed their quick and dirty ohv Y block into production a 
year ahead in 1954 and ate crow till they sheepishly introduced their SBC 
clone in 1961 . Their light weight , low deck , large bore , short stroke is 
cool . Ours is lighter , lower , larger , and shorter . Their wrist pins are 
an odd small diameter , our's are odd and smaller .

John


> Ok, now that I have been educate on the facts that GM wrist pins are far
> more prevalent than the Ford pins, here is a corollary  question:  What
> the heck is up with the odd ball diameters of the pins? When I looked
> through a listing of pins, I don't think I found any with what I would
> consider a nominal dimension.  I mean, fords is 0.912 inches and GM's is
> 0.927.  Why the odd dimension used?
>
> mayf
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