4" Lift
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Posting Guru
Joined: Apr 2002
Posts: 1,187
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From: CT
4" Lift
I have just recently installed a 4" lift on to my 93 F150, when i'm offroading i can hear a banging sound under the drivers side floor board. After closer inspection i can see two lines that run around the front drive shaft right above the crossmember. I'm guessing that the when flexing the drive shaft rubs on the crossmember. Is there any way to get more room between the drive shaft and the crossmember?
Posting Guru
Joined: Nov 2001
Posts: 1,098
Likes: 1
From: Raleigh, NC
4" Lift
you can just take a saw-zall to the cross member and cut a hole or dip in it so that the drive shaft wont hit it. it could also be that you need to replace the bushings on your radius arms and that when you flex your hearing the radius arms move in and out of the brackets.
Elder User
Joined: Jul 2001
Posts: 726
Likes: 0
From: Glendale USA
4" Lift
Radius arm bushings may look fine from the outside but be egg shaped on the inside and creating your noise as for radius arm bushings being expensive to replace a complete set only costs $18.00 + tax for a set of urethane ones and the average guy can replace them. without much trouble.
Freshman User
Joined: Sep 2001
Posts: 33
Likes: 0
4" Lift
i have the same prouble that you do. i have a 8 inch lift installed on my truck and everytime i off-road i heard a bad sound so i want play no more but i was looking the other day and my driveshaft is rubbing on my cross memeber. i don't know what i'm going to do because i can cut it or nothing because my tranmition mount is there and i really don't wanrt to weaken that thing any more. i have keep running mine and it is gettting smaller and smaller in that one spot i don't really know what i'm going to do right now all i know if not to let your front flex for right now until me and you slover this proublem.. should have some reply with a solulation soon i hope.:P 
