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Old 02-08-2021, 10:30 AM
Donzi's Avatar
Donzi Donzi is offline
232 I6
Join Date: May 03, 2006
Location: Sweden
Posts: 52
14 bolt 67" WMS

Hi Guys,

I'm looking to swap in a 14 bolt 67" WMS, but not having any luck finding a pre-98 version. Anybody have one lying around? I'm planning to swap hubs. gears and go with discs so a bare axle works too...

Let me know if you have anything interesting...
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Old 03-05-2021, 10:06 PM
BA_051 BA_051 is offline
232 I6
Join Date: May 06, 2008
Location: Albuquerque, NM
Posts: 215
From my research over the years, the 14 bold had a few different widths.

63.5" cab and chassis with dual rear wheels

67.5" single rear wheel
70" for single rear wheel vans

and 72" for duallies
and well, make a 76" WMS axle using dually axle with SRW hubs.

The 67.5" SRW and 63.5" DRW used the same axle, but used different hubs to achieve the narrower WMS.

The duallies used a very wide axle with the same hubs as the 63.5" axle.
You can make an 76" WMS axle using SRW hubs on the dually axle.

The 2001+ 14 bolts came factory with disk brakes and are 68" wms. They have m14x1.5 studs vs the old 9/16-18 studs. I am running a 14b Rear in my J20 that I had a water jet cut the same backing plate as a 2001+ axle and welded it up. Machined the hubs down to fit a 2001+ rear 3500 rotor over the hub, and have the parking brake. Was a lot of work and wish I had used a 2001+ newer axle from the start. All of the 14B full floater axles used the same gears and carrier regardless of year. Only difference is the bearing kit.

I did the disk brake conversion using the 3/4 ton rotors and calipers and hated it. I did find the eldorado calipers with he parking brake and even with them fully adjusted, wouldnt hold worth a crap, especially with my beast weighting 7600lbs on 40's. Thats why I converted it to use the factory 2001+ calipers, rotors, parking brake components.
1974 Jeep J20, gladiator grill, 6BTA JWAC cummins, HX55, 4in exhaust to 5in stack, nv4500/ford np205, 14b kingpin axle, 14b rear axle, 4.56 gears, 40x13.50r17's on 17x10 mags

Future mods:
G56 6 speed with dual disk clutch
Vintage air AC and Heat underdash combo unit

Last edited by BA_051 : 03-05-2021 at 10:12 PM.
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