Topic: rear end bining up in 4 wheel drive

[richard head]

hey guys any help would be greatly appreciated.the problem is in my 85 truck.when i put it in 4 wheel drive,the rear end seems to be binding up and i'm not sure what the problem is.i know it's not a lot of info,but that's basiically what is happening.---thanks

[FIREBALL]

richard,
Are you testing on hard (paved) ground?
How long have you had this rig? Has the front or rear end been changed? I've seen many rigs where the 3rd member has been changed out and the person doing it did not realize that there are more than one stock gear ratio.
Anymore info? Does it do it in a straight line or only when turning etc.

[richard head [OP]]

fireball,thanks for responding.i have owned this truck for 11 yrs.it has 5.29's with a detroit in the rear.yes,this is on the pavement when occuring.it seems to be worse while turning.i appreciate any more help.

[BCD]

I'm with fireball, sounds like different gear ratio's is the front also 5.29? has this been going on since you regeared the axles or is it a new problem?

[79coyotefrg]

also  you should have more air in the front tires than the rear tires,  you can measure from the ground to the top  of the tire  and adjust air pressure accordingly  to get the same height

like 20 psi front 12 rear,   just depends on the truck

[RustRunner]

i'm gonna have say that it's binding because your doing it on pavement(too much traction), try it on some gravel and it should be fine.  of course its gonna be worse when you turn on pavement in 4wd.

[79coyotefrg]

if the tires are perfectly  the same hieght  it wont bind at all,  perfect is hard, if not impossible  but you can get close

and yea  dont run in 4wd  on pavement,  thats just bad

[richard head [OP]]

thanks to all for replies.only problem was the driver.the truck has been sitting for a while and i just changed all the fluids and wanted to make sure everything was working o.k.there is no dirt near me so i just went to a parking lot,seems that was the main problem.