Does lifting the truck mess w/ the tranny? - Ford Powerstroke Diesel Forum
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Old 09-23-2008, 06:25 PM
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Does lifting the truck mess w/ the tranny?

I had my mechanic inspect my truck today before I sold it
and he said the reason why my tranny was acting up was because I added a suspension lift to it, is that so? I was like that has nothing to do with it, then again he is a mechanic so he has more knowledge than I do. So i just wanted to get your opinions on this.
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Old 09-23-2008, 06:30 PM
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sounds about right! ive had my truck for a couple of months now and ive put a 6 inch lift on it. trans ran fine till a couple months ago started slipping a little. so yea i would say its because of the lift. And hopefully im going to put my valve body in mine this weekend!!!!
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Old 09-23-2008, 06:41 PM
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Bigger tires with stock 3.73 gears place more stress on the transmission, engine, etc...
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Old 09-23-2008, 06:51 PM
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So whats the solution to this problem? I am planning to lift my new cummins soon...
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Old 09-23-2008, 07:02 PM
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it's the tires that go along with lifting the truck that puts added stress on the trans. a good trans service every 30k, no burnouts and watch the fluid temps, maybe add a larger trans cooler and you'll be ok
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Old 09-23-2008, 07:04 PM
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Quote:
Originally Posted by sikktruk01 View Post
no burnouts
Booo... That's no fun
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Old 09-23-2008, 07:06 PM
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I agree on that LOL
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Old 09-23-2008, 07:13 PM
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Change the gear ratio to match as close as you can to stock performance. What I mean is you want to regear the axles so your rpm's are as close as you can get to what it was with stock tires.

A lot of people do not regear the axles they just add the bigger tires. Which does put undue stress and premature wear to the internal clutches and gears inside the automatic trans.
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Old 09-23-2008, 07:14 PM
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Yep regear.


For example, I run 4.56s with 38s. Puts me close to the same effective gear ratio as a stock truck with 31.6" tires and 3.73s.
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Old 09-23-2008, 07:16 PM
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Ohhh ok I got ya!! Yea soon I am adding a 6" lift w/ 35" tires on 22's I hope thats not overkill.
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