I Do This For The Glory
Join Date: Dec 1999
Location: Nobleboro, Maine
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Re: popular axle swaps?
Well, I'm putting a D30 front and older D44 rear. The strongest offset rear if out of the 1971 Jeep CJ, it came with 30 spline axles that are 1 piece and 1.31" in diameter. The 1970 and earlier CJ's used 2 piece axles and are only 19 spline, but they'll be fine for the stock engine. The older D44 also came stock with 5.38's.
The rear AMC 20 behind the automatics was also offset, as was the wider D44 used in the Cherokees and Wagoneers, but they are pretty wide. I'd stick with the narrow track CJ axles found in automatics from '76-'81, they have an 8 7/8" ring gear with 1.25" shafts and can handle some serious HP.
I plan on using the rear D44 with 5.38's and the newer Jeep CJ narrow track D30 front, about the same width as the stock Zuk axle. The up side is they are a little larger, have disc brakes, and U-joints. I'll regear it to 5.38, which is the lowest you can get for it.
Winter Harbor, Maine
'81 CJ-8 Scrambled, It's a Jeep, Chevy, IHC kinda thing!
'88.5 Zuki, 5" Calmini, Locked, Swamped, Rolled, and just generally broken in right!