Engine/Transmission (1994 - 1998) Looking for Rear Driveshaft Diameter for '95 3500 4X4 Ext Cab Auto w/241 HD T-Case

[Extreme1]

I'm converting my '94 standard cab to an extended cab. I know some of the later 2X4 5 speeds came with 4" diameter rear 2 piece shafts and the autos came with 3 1/4" rear shafts. My standard cab automatic 241 HD has a 1 piece 4" driveshaft. A shaft I bought from a salvage yard from a '95 3500 4X4 has a 2 piece 3 1/4" rear shaft.



The '95 is unique because of the length (RH trannys are about 2" longer) and it's the first year of extended cab body.



I'm not sure if the HD T-case would make a difference in shaft diameter. Can someone with a '95 3500 4X4 automatic with a HD T-case PLEASE measure their rear driveshaft diameter and post it?

 

[zstroken]

THey typically use the two piece shafts on longer applications to cut back on high speed vibrations. If your not doing sledpulling, or something nuts with your truck. I would use the two piece. I had a 97 3500 cab and chassis and it came with a 1 piece shaft.

 

[Extreme1]

Standard cabs (long box only) have 1 piece shafts, extended cab/quad cab short box trucks have 1 piece shafts. Extended cab/quad cab long box trucks use a 2 piece shaft.



I'm planning on a 2 piece but I'd like the 4" diameter shafts instead of the 3 1/4" shafts. If the '95's with the 241 HD didn't use the 4" shaft I'll buy a used one from a 5 speed and shorten the front shaft.