when ever I back up my front tires bow out from the bottom looks real funny like the bottom of each tire is 3" further out then the tops!! Once I move foward they come back in line and are verticle? Anyone else have this problem?

Ted

 

it a common thing with the "twin I-beam" front end. Mine is the same way but not quite as dramatic as you describe.

 

I'm in the same boat as you diego. Everyone says that it's normal but if they saw how bad mine does it they would know its anything but normal. I've replaced the balljoints, lift brackets and had an alignment done without any change. I'm bringing it to a new shop to see if they can fix it.

 

Somebody posted something about axle pivot bushings. I think it's the last thing I can replace. I'll let you know what they tell me

 

Are you guys driving 4 wheel drives or 2 wheel? On the 2 wheelers that's usually caused by radius arm bushings. On gassers the rear bushing on the right side likes to melt away after a few years unless you devise a heat shield for it.

Another common cause is the leaf spring shackle bushings. Mine were almost nonexistant on the top of the shackles when I replaced them all a couple months ago. The camber stays right where I set it now.

If you have a lift kit then it's anyones guess. I haven't seen a well enough designed lift yet for any of our trucks. They all mess up something in the alignment.

 

Yes, The radius arm bushings are easy to fix. Usually its not the bushing, but the actual bracket itself rots out. I've replaced both of mine now.

The 4wd's shoudln't do it, but something is rocking under the truck.

Do this.
Load up the tires by backing up, and jack the truck up on one side and watch what the tire does when it rotates back into position.
That should help you get a better grasp of what is moving under there.

I dont think there is anything to really keep the axles from twisting to much with the leaf spring setup. Some radius arms would probably help a lot.

 

What is the bracket called you are talking about? Is it a dealer only part?

 

I get it at the dealership, but its an f-150 part, cause it has coils. The f150 part is only like 25 i think, i'd have to look at my recipts.
You shouldn't have them on there.
As for the 250 brackets and 350 brackets, I duno.

 

It's the axle pivot bushing. I got two brand new MOOG's sitting in the truck. It will have to wait a couple days until it quits snowing........In April

 

I had a 91 f250 that i had nothing but problems with that junk front end, got rid of it and bought a 97F350 just for the dana 60, other than balljoints every 80k not one problem, and would get 50k miles out of 35 inch bf goodrich mud terrains, i picked up a 94 f250 a year ago off a buddy of mine, front end was tight but didnt want the hassle of dealing with that dana50ttb again, so i found a 90 or 91 not sure what year it was but it was the old body style and put it under my 250, had to rebuild the d60 cause it was sittn around for a few years, put new brakes on it , kingpin bearings, used the hubs off my ttb cause they were in better shape than the ones on the 60, new u joints and seals, all in all i did it rather cheap, had about 300 bucks in it total, my leaf springs on my 94 were bad, but i had the stock springs out of my 97 when i lifted it. so i just used them, the only thing needed was the stering linkage,cause its different than the 250's. so damn easy to install i wonder why i ever and why ever ford used those junk ttb's. i have had no problems with this. and a side note , a dana 60 out of a 91 and older is better than a 92-97 cause they have kingpins instead of balljoints. a lot stronger. I guess i got lucky cause the donor truck had the same gear ratio as my truck, so no need to swap ring and pinions.

plus i scrapped the truck and got a spare rear axle, zf-5 and a big block 460 and still got 300 bucks in scrap for the rest of the truck....

I hate the ttb with a passion, so my opinion is junk it for a dana 60, easy swap and well worth it.

 

RRanch. spent some time under the truck today. Both front axle shackle bushings are long gone! Guess thats the next thing i buy????

 

If anyone is looking for a d60 TTB. I have one available with all the stearing linkage and shock mounts.
It is a King Pin Setup.
Just PM for info.

 

The TTB is a Dana50, the Dana 60 is a solid axle.