2003 2500hd rear axle swap on an 84 k10

[Ewhitaker0020]

I found a free rear end that's supposed to be good. And says it's off of a 2003 Chevy hd. It has 4.10 gears and is posi traction and floating axles. I don't know what the floating axles part means, but I love the 8 lug and that it has calipers.

Is there any way I can swap this over to my 84 k10? If it's not a direct swap what if anything can I do to make it work?

If I can't do the swap that's fine, but I'd love to do this. The axle is free, in really great shape, just down the road from my house, and has new bearings.

 

[yevgenievich]

Have to weld new spring perches on and possibly shock mounts. Did a swap on 85, and actually managed to reuse the shock mounts that were on the axle

 

[Rickf]

Might also need to change the brake proportion valve to accommodate rear discs.

Free isn't always free.

 

[bucket]

Free isn't always free.

While that is true, in this case, it is well worth the time and energy to perform the swap. It's a good axle.

If I had the choice of a newer 14bolt full float axle with disc brakes that was free, or a stock direct fit 14ff with drums that cost $150-200... I'd go with the free one.

 

[SquareRoot]

While that is true, in this case, it is well worth the time and energy to perform the swap. It's a good axle.

If I had the choice of a newer 14bolt full float axle with disc brakes that was free, or a stock direct fit 14ff with drums that cost $150-200... I'd go with the free one.

Amen brother! I'm looking for a newer 14 FF myself. I no likey the 85 14 FF with Detroit bang bang and #400 drums.

 

[Doppleganger]

Does that include a normal parking brake?

 

[Rickf]

Eric, will you be swapping the front axle also to have 8 lug rims all around? Does the front axle already have 4.10's? If necessary can you do the cutting & welding yourself?
Just more things to consider for the "free" axle.

Brandon 2024!

 

[Ewhitaker0020]

I would be swapping both axles. Unfortunately the axle was given away before I get ahold of it. I would've shelved it for now until I got the money together to swap both at the same time.

Gotta get rid of this 3.08 gearing. The high gearing mixed with a stock 305 engine and 700r4 transmission make it feel like I've got about 50 horsepower total in this thing. The slightly larger than factory 31" tires aren't helping any either.

 

[Wes Corneau]

Have to weld new spring perches on and possibly shock mounts. Did a swap on 85, and actually managed to reuse the shock mounts that were on the axle

Were you able to use the stock driveshaft? What did you do for the parking brake cable?

 

[yevgenievich]

Were you able to use the stock driveshaft? What did you do for the parking brake cable?

Had a new driveshaft made. There was some combination of gmt800 cables that was supposed to work, but did not actually get parking cables set up on this vehicle

 

[Ricko1966]

I would be swapping both axles. Unfortunately the axle was given away before I get ahold of it. I would've shelved it for now until I got the money together to swap both at the same time.

Gotta get rid of this 3.08 gearing. The high gearing mixed with a stock 305 engine and 700r4 transmission make it feel like I've got about 50 horsepower total in this thing. The slightly larger than factory 31" tires aren't helping any either.

500 ft lbs of torque would fix all that. Low buck 454 PP.