Join Date: Sep 1999
Location: Hot Springs, AR
Thanked 5 Times in 5 Posts
Re: best year wagooneer axles to swap into CJ7
I've done both swaps. The 70 was easier and cheaper. I was able to reuse the brakes since the axle hadn't been parked long. (My brother swapped it out of his.) It's also already 5 lug and should be 30 spline.
The later 70's that I built to replace the 70 (I suspect the shop that swapped the gears didn't fill it) was a 6 lug. I sent the shafts to moser engineering and had them redrilled to 5 lug. If you do this, make sure you tell them you want pressed in shouldered studs, not screw in studs. I then used 99 dodge 1/2 ton 4x4 rear drums as they are a perfect fit and 5 lug. (I spent several hours at the parts store looking through the book for dimensions and comparing likely candidates with the original 6 lug drum until I finally found a match.) The replacement waggoneer drums are $70 or so and another $30 each for moser to redrill them. The dodge drums were $45 each. Other than that, the tubes are the same size and the shock mounts are the same. The shock mounts have to be cut off and new spring pads welded on. The old spring pads are far enough out not to have to remove them for spring under or spring over.
Hope this helps.