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1957 Ford Model 640


 
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Buz Caldwell
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Joined: 27 Sep 2013
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PostPosted: Fri Sep 27, 2013 5:59 pm    Post subject: 1957 Ford Model 640 Reply to specific post Reply with quote

I have a 1957 Ford Model 640 with the standard 4 speed transmission. I'm considering purchasing and installing a Sherman High / Low transmission. The Sherman transmission I've located has a fine spline output shaft. Will this Sherman transmission fit this model Ford Tractor?
 
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Texas!
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PostPosted: Fri Sep 27, 2013 7:03 pm    Post subject: Re: 1957 Ford Model 640 Reply to specific post Reply with quote

Your 640 has the coarse spline input shaft so it will not fit as-is. You would need to replace the Sherman fine spline input shaft with a coarse one or possibly you could replace your coarse spline clutch disc with a fine spline disc out of a 641.
 
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Buz Caldwell
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PostPosted: Sat Sep 28, 2013 2:45 am    Post subject: Re: 1957 Ford Model 640 Reply to specific post Reply with quote

Texas,
Thank you. Very helpful information. I can tell I will be spending lots of time on this forum as I go through the restoration of this tractory.
 
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