Drive shaft lengthening???
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Senior User
Joined: Dec 2002
Posts: 209
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From: Lorain, Ohio
Drive shaft lengthening???
I am installing a six inch lift hopefully this week. (waiting for clutch to arrive to install first) I already have the drive shafts out and am sending them for new splines. Will either shaft need to be lenghtened or will they be long enough with the 6" lift? I don't want to wait to put the lift on and then measure if i don't have to. Would like to have the drive shafts already done and waiting to go back in the truck. Truck is a 91 f250. Any insight would be arreciated. Thanks.
Posting Guru
Joined: Jul 2003
Posts: 1,280
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From: alaska
if your kit does not include instructions about the drive shafts , i would wait and measure for correct length after you have the kit installed . that way if you havt to retube the shafts it can be done at the same time as the resplining and save you some bucks,on labor of naving to do it twice . the kit maker usually has a tech line that would be able to give you that info before you spend money that you dont need to,good luck,bob
Post Fiend
Joined: Sep 2000
Posts: 8,238
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From: Oregon
I imagine (just guessing) that they will have to be lengthed. I've seen guys put in a 6" lift, but with a two piece driveshaft pulled to the extreme of the slip yoke it still works going down the road...then they take it offroad and the first time the suspension articulates further your driveline pulls apart. I always advise re-measuring after you lift, and double check your u-joint angles as well.
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Senior User
Joined: Dec 2002
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From: Lorain, Ohio
I'll wait then. The driveshaft guy is a friend of a friend and says he can do it in a couple hours. Just was hoping someone already put a 6" lift on a 91 style f250 and knew for sure.
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