Are you sure it'll fit?

I thought I read somewhere that the GM and Dodge 11.5" diffs are slightly different.

 

If it came out of a 11.5" AAM,it was from either an 8.1 or Dmax truck.

If it'll stand up to a Dmax,it'll stand up to a Cummins.

IMO the G80 (the "locker" in the GM trucks) is light years ahead of the crap Dodge uses. I've had a G80 in more than one truck and they worked very well. I always knew when it would lock and what to expect.

The LSD in the Dodge is a POS. It nevers works the same way twice.

 

Too funny.. My experiance is the exact opposite. I always know what the Trac-Rite will do, and the only thing predictable about the gov-lock was that it was un-predictable (well other than it likes to kick the truck sideways on off caber snow coverd forest service roads)..

 

my son has and 04 dodge diesel only way it will spin both wheels forward is if both are on pavement. put one on pavement and one in grass on a hill it will spin the one in grass and not move. put it in reverse in the same spot and will leave a black mark on pavement and dig up the grass

 

Yeah I forgot it's not going to fit anyway. Dodge uses a larger axle shaft in the 11.5's behind the cumalong. The duramax uses a smaller axle shaft.

 

Thats normal for just about any LSD. They all do very poor at a stopped condition, especially in a high traction/low tractoin scenario. A little brake will help transfer power to the low traction side.

Also on a standard vehicle the right rear is the drive tire in D, and the left rear is the drive tire in R; its the way the spiders and R&P are setup.

 

Crazy Cooter said it. Check out any chevy forum and almost all the diff problems talked about will be an issue with the "Gov-Bomb." They got that term for a reason.

 

Sorry, not true. The Gov-Loc, Trac-Rite, Tru-Trac and ARB for the GM 11.5" or the Chrysler 11.5" are the same part number for each style of locker/posi unit.

 

Correct, they are both 30 spline axles.

The axle tubes are different diamater, but that doesn't effect the axle shafts or carrier.

 

Grass is always greener...............

Never replaced a busted Chrysler Trac-rite. Can't say the same for the G80 Gov-Bomb. My scrap barrel is always full of them! 7.5's, 8.5's, 8.6's, 9.5's, 10.5's, and 11.5's....they are all junk!

I have busted three 10.5 G80's myself!

 

this old man begs to differ. my 90 will spin both rear wheels on a 10 percent slope. one wheel on ice other on hard pavement. the 82 has a 9.25 with the so called junk cone type in it and it will do the same. won a bet with a chevy nut with both of them.

 

I stand corrected even though I'm sitting down.