This is topic rear gears for automatic good or bad in forum Tech Talk at Northern California Ford Owners  .


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Posted by GHOSTDOG (Member # 522) on :
 
wanting to no if rear end gears for a automatic are a good idead or bad just wondering because of ware and tear on my tranny , mytranny has a shift kit and i think a higher torque converter, had it rebuilt dont want to over heat it or anything just wondering on oppinions
 

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Posted by hidnn.o.s. (Member # 1219) on :
 
Toss some 373's in it and you will be very happy and as long as they are installed correctly you will have no problems down the road
 

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Posted by st5150 (Member # 51) on :
 
3.73's if you drive on the freeway a lot or 4.10's will really wake up your car
 

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Posted by GHOSTDOG (Member # 522) on :
 
but what im asking will the higher rear gears overheat or wear out my tranny , im just doin normal driving but would like a little more acceleration
 

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Posted by 91sleeper (Member # 779) on :
 
Get a big tranny cooler and the tranny will be fine I have 3.73's in myne with a big tranny cooler and havent had any problems.
 

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Posted by cobraracer46 (Member # 1142) on :
 
I would be worried about a shit kit, I mean shift kit hurting a tranny more than lower gears becuse a shit kit usually increases shift pressures too much and when that happens, you get those "jerky" or very hard shifts. A tranny will not take that kind of Gorrila treatment for long. If I had an auto tranny, I would go with 4.10's. Depending on what type of tranny you have, Ford racing might have a lower gear set for the gear train inside the tranny and that would be the hot set up.
 

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Posted by bmxer (Member # 1222) on :
 

quote:

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Originally posted by cobraracer46:
I would be worried about a shit kit, I mean shift kit hurting a tranny more than lower gears becuse a shit kit usually increases shift pressures too much and when that happens, you get those "jerky" or very hard shifts.

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i thought that a shift kit was supposed to help the tranny, casue when it shifts smooth dosen't it wear down the tranny? kinda like burning the clutch on a manual tranny.
 

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Posted by PseudoCobra (Member # 1689) on :
 
I have 4.10's without any work done to the tranny and it doesn't heat it up at all. by the way I do a ton of freeway drving and still manage 17MPG. Go with the 410's
 

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Posted by 98StangPower (Member # 518) on :
 
Shift kits prolong the life of the tranny.
 

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