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Old 03-30-2020, 02:42 PM   #12
blucar
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Join Date: Jul 2010
Location: Ventura, CA
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Default Re: Cutting down 42 to 48 ford axles for a 40 ford

Quote:
Originally Posted by Ol' Ron View Post
Good reason to change the rear end to a later open drive unit. I gave up on these rears and trans 50 years ago. If your a puris fine, but a daily driver, not so much.

I'm with Ol' Ron' thinking, except I would not go to a later model open drive line.
My '36 originally had a Columbia under it when I bought the car in '52. Did not like the antiquated controls so I upgraded to a '42-48 Columbia. I used the '36 center section/drive line, 47-48 axles/housings, '47-48 Columbia, '37-38 radius bars (correct length, fit) '39 drums. A bolt together modification.

The '42-48 rear end is slightly under 2" wider than the '36, however, that equates to less than a 1" on each side which does not worth the added work to shorten the axles.
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