Rear driveshaft spins, wheels dont move?

[Marshall]

you would want / rent a larger trolly jack that the center pumpkin would sit on and a good floor to roll it around it round. and good jack stands to hold the truck up. not something to screw around with.
But easy enough to do with the right stuff.
You could leave the wheels on and just roll it around that way. A hoist is the best.
I used a front end loader quite often for this type of thing , with jack stands of different types and sizes.

Heard of Jack All? every farmer has some, one was used for something like this and car slid sideways a little, fell off the jack and killed a 17 yr old boy.
He was a class mate to my son.
His mother found him when she went home after work.
So be careful if you go that way.
I presume we are talking a 2 wd and not 4wd. 2 wd should not pose any problems on the switch that I know of, I have not done any with computers running stuff.

 

[MrBonez]

Thanks for the advice and help. Will be sure to post pictures and ask for advice on where to go when i open the rear. Part of me wants to swap the whole rear with that 3.92 anti spin from my old truck but if its an easy fix im just going to go tnat route and not swap. I only have a small single stall garage, basic tools and it would only be me doing the swap. The weight of the whole rear end would be tricky with 1 person doing the work

If you decide to do an outright assembly swap:

A little tricky but still possible - I've done it before that way and managing how the assembly is lifted and held in place is key.

Also be sure to take your time - You won't win any trophys for getting it done in x amount of minutes.

Since it should have leafsprings like mine it's not as bad as you'd think to do even with basic tools.

You simply get the rear of the truck up and make sure it's supported, as in well supported on both sides first.

Undo any connections like removing the driveshaft, brake lines and sensors - Anything from the truck to it.

Then slip a jack with a large enough face/head on it that can roll under the carrier and have the carrier sit on it - Put a little pressure with the jack to it for holding it up - Don't try to lift the truck of course.
Do expect it not to be "Balanced" because it won't be, expect the assembly to try and roll foward because gravity will make the carrier spin the assembly and drop the carrier itself down once you start loosening things up.
It's a good idea to have an extra rolling jack handy too at times.

Next, undo and remove the assembly's leafspring mounting Ubolts to the assembly, then remove the bolts from the rear of the leaf springs so that end of them drops down and simply loosen the ones towards the front.

Only loosen these - Do not remove them.

Next, you'll let the rear drop down with the jack - All you need to do then is have a rolling platform of somekind (Creeper or something similar) and lower the assembly down onto it - It will come back towards the rear of the pickup of course so roll/drag it out - Then it's out and that part is done.

Installation is largely the reverse of removal except for getting things in the right place at the right angle(s).