ford 4000 trans November 11, 2015 08:29AM
Will a 4000 transmission work for a 360 ci, 3000 rpm,6000lb p-pump class? Whats the ratio in 8th?
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Re: ford 4000 trans November 11, 2015 02:11PM
8th gear is 21.42:1. You will twist off the input shaft eventually. You would need to hollow out the trans and install a gearbox if you want it to live. You may be able to redesign the input shaft and get some heavier gears. I recommend a 5000 its stronger and has some better gear options though its a little heavier.
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Re: ford 4000 trans November 12, 2015 12:05PM
What engine are you useing
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Re: ford 4000 trans November 12, 2015 02:07PM
decubed 401
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Re: ford 4000 trans November 13, 2015 02:19AM
What is the weight difference in a 4000 and 5000
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Re: ford 4000 trans November 16, 2015 01:05AM
Curt how much heavier is a 5000 tran/rear end than say a 500p or a 7000 trans/rearend? Thanks
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Re: ford 4000 trans November 16, 2015 01:07AM
Correction the question i am trying to ask is how much heavier is a 5000 or 7000 trans/rear than a 4000 trans/rear?
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Re: ford 4000 trans November 17, 2015 02:42PM
I don't know for sure but I doubt more than 500lb. ring and pinion is the same weight and most of the gears are the same so the trans gears are the same. the trans case is for sure heavier and the axle center section is heavier for a 5000 over a 4000. the trumpet housings are about the same. 5000 and 7000 are the same, 5000 have straight cut gears and roller bearings and 7000 have helical cut gears and tapered roller bearings.
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