Rear end question

you'll need the 31 spline differential to match up with the axles. i've never doen the install myself, but i have installed gears and I don't think it would be too hard to do.

csledd said:

you'll need the 31 spline differential to match up with the axles.

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Yes.

if you havent done a gear swap before, take it to a pro

it's a little easier to do than a gear swap since you don't have to mess with the pinion or setting pinion depth.

hardest part of this job is shimming the traction-lok clutches.

tomustang said:

Yes.

if you havent done a gear swap before, take it to a pro

Click to expand...

+1 . Also, you should get a better differential as opposed to the FRPP 8.8 . Possibly a Detroit locker or Eaton. Might as well do it now if you have the cash.

read up on the diffs. I got many varring opinions when I did mine.

eatons can break, lockers are noisy

I ended up just getting the 31 spline trac lok.

they make two models. the m-4204-318 and the m-4204-318c. the later having carbon fiber cluthes.

I got the m-4204-318 for $194 from summit the carbon fiber model was $305 or so. you could also get a used on off ebay and rebuild it.

install is a snap really just make sure you get a shim kit and just set the backlash. you will have to remove the tone rings from the old axles if you have abs. the mosers run a bit larger than the ford axels on the machined surface for the tone ring. so I would get the FRPP axels if I were doing it over again. it was a pain to get the tone rings on the mosers. the FRPP models are $25 cheaper as well. they were on back order at the time so I go the moser.