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12-26-2011, 01:11 PM | #1 |
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Join Date: May 2010
Posts: 26
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51 ford rearend question.
Have a 51 ford with stock motor-rochester 4-jet and msd ign-linked to a t-5 trans. First gear is a stump puller. rearend is 4;10 I believe the rear without od is 3;73, and the a/t isa 3;31. Could i replace my 4;10 third member with 3;31 third member? And would this help?
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12-26-2011, 01:35 PM | #2 |
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Join Date: May 2010
Location: Gerrardstown, WV
Posts: 2,266
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Re: 51 ford rearend question.
I'd use the 3:73, I think the 3:31 would be too high. Back in the '50's, my brother had a '55 Ford with a six cyl and the rear went bad and he put in a rear from an automatic and it would hardly start out, especially on a hill. He changed it to another ratio.
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12-26-2011, 01:36 PM | #3 |
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Join Date: Oct 2011
Location: Wash.
Posts: 233
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Re: 51 ford rearend question.
Your rear tire size (compared to stock size) will play a role in final gearing also.
But, I would think in high gear with 3:31 you might be a little under powered on hills etc. Just my opinion. Last edited by Junknshit; 12-26-2011 at 01:39 PM. Reason: spillon |
01-02-2012, 01:19 AM | #4 |
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Join Date: May 2010
Location: Huntsville,Alabama
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Re: 51 ford rearend question.
I agree, 3:31 would be too high. Also hard on the clutch.
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01-02-2012, 04:35 AM | #5 |
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Join Date: May 2010
Location: Springfield IL
Posts: 84
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Re: 51 ford rearend question.
With a T5 you should easily be able to run a 3.31 but depending on which gear set the T5 has in it 1st still may seem like a stump puller.
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01-02-2012, 07:15 AM | #6 | |
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Re: 51 ford rearend question.
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