Convert my Chevy 3500 dually to single rear wheel.

[Nick_Kuebler]

Got a 94' Chevy 3500 4x4 with a ppump 24V that im wanting to convert to single rear wheel. What im wondering is can I convert this ton rear end thats already in the truck to a single or do I need to swap it out.? If it can be converted what all is required for this? Any info greatly appreciated !

[Chevycummins]

does yours have the corp 14 bolt full float? i might have a srw axle if your interested. i am not sure if you can just replace the hubs with srw hubs or if the over all axle housings are different.

[Nick_Kuebler]

Yes 14 bolt full floater with 4:10's. If possible I'd like to just convert that to single while still under the truck.

[Chevycummins]

Ok if I an get ahold of my dad tomorrow ill have him measure my srw 14 bolts I got a the farm. One is 3.73 and the other is 4.10

[Nick_Kuebler]

Thanks

[jasonc]

Width is the only difference, I believe it's 2 inches more narrow. wheel spacers if it looks off.

[Chevycummins]

Copied from a pirate4x4 thread about the 14 bolts

A regular 14 bolt is 67.5 wms
A C&C dually rear is 63.5 wms

Pickup duallies were mostly Dana 70's until the early 90's, when the NBS trucks started using 14 bolt duallies.

Check the*14 bible info here*
for more information

Once again - this article is concerned only with GM 14 Bolt full-float rear drive axles. With that said, the following table attempts to capture the data.*

Notes:

The SRW and C&C axles use the same housings and shafts, with the difference in width being in the hubs. The housings are actuallly identical except for the location of the backing plate flange. Drums & hubs are different, but backing plates, shoes, and wheel cylinders are the same)*
* The SRW and Van axles use the same hubs, the C&C and DRW axles use the same hubs; Though different, the SRW/Van hubs and the C&C/DRW hubs can be interchanged causing a change to the axles WMS (see pics below)*
SRW and C&C axle shafts are the same*
** Van, DRW, and SRW/C&C axle shafts are all different lengths as follows (long/right side / short/left side):*
Type 1 - SRW/C&C - 37-5/8" / 31-5/8"*
Type 2 - DRW - ??*
Type 3 - Van - 39-3/8" / 33-3/8"*
C&C and dually brakes are the same.*
In all cases one side axleshaft is shorter than the other; pinions are centered.*
1350 appears to be the only available stock pinion yoke.*
1-tons feature 40.5" perch spacing - whether C&C or pickup, whether SRW or DRW. 3/4-ton is 42.5" spacing. (COUNTER) - The perchs on my C&C measure 36"*
Wheel studs went metric for the 88-up C/K trucks, and 96-up vans*
Front 60 and rear 14b spindles have the same bearing spacing and same bearing journal sizes. Seal journal is different*


Different years

The year split is '72-88 and 89+. I shall refer to these as "first design" and "second design". Of course, there may be variations. Differences between these years are noted below. Where the difference is known only to apply to certain "types", I shall indicate this. Otherwsie, it is not known whether the differences noted between the years apply to all types or not.

Second design axles have more fins on the center section*
First design axles 1984 and earlier use a different pinion straddle bearing than 1985 and later*
Second design SRW axles in 1-ton pickup trucks and 3/4 ton Suburbans changed to allow for a slide-off drum (drum can be removed without pressing out the wheel studs). The backside of these hubs is not machined flat to accept a rotor, for example. The hub flange is also further inboard to allow for the thickness of the drum.

[OrangeNV]

for as cheap as you can get a 14 bolt, just got find a single wheel 14bolt, swap the brakes, get a new set of u bolts and your good to go

[Red Sleeper]

Originally Posted by OrangeNV

for as cheap as you can get a 14 bolt, just got find a single wheel 14bolt, swap the brakes, get a new set of u bolts and your good to go

X2. They can be had for $100. Swap your guts over and go.

[Nick_Kuebler]

Guy who im buyin all my suspension parts from says he just uses one single wheel with spacers and long lug nuts when he does this and it looks perfectly normal . If it all works out ill prolly ho that route. Then I have the option of single or dually at any time