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Bruce Lancaster · 10-08-2013, 02:15 PM

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Here's an old Model A forum post on the threads...
model A used same threads as V8.Marco came up with blueprint, grade 4 fit in early standard, a later print showed 5 I think. I found 1930's thread specs from Ford sources, don't really know translation to modern class 3 or whatever.

http://www.fordbarn.com/forum/showth...lass&showall=1

10-08-2013, 02:15 PM	#26
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: Cleaning threaded block holes Sponsored Links (Register now to hide all advertisements) Here's an old Model A forum post on the threads... model A used same threads as V8.Marco came up with blueprint, grade 4 fit in early standard, a later print showed 5 I think. I found 1930's thread specs from Ford sources, don't really know translation to modern class 3 or whatever. http://www.fordbarn.com/forum/showth...lass&showall=1