14 BOLT REAR END

[JERRY-DEE]

I have a 1998 GMC Ext cab 1500 Z71, it has a 14 bolt rear end. Most of the 1500 I have seen have 10 bolt. Was 14 bolt an option? It doesn't seem likely that the previous owner would replaced the 10 bolt since the rest of the truck has no mods. Any one else have a 14 bolt in their 1/2 ton?

 

[mudhog]

it may be the hevy half ton that might make it have a 14sf in it from the factory

 

[Twiz]

Yerp, what he said. It's a heavy half. You got your-self a fairly odd bird there, I've only seen a couple of 14-bolt w/6 lugers around here.

I't's a 14-bolt (cover) with a 9.5" ring gear and large semi-floater axles. An ecellent diff.

Congrats on the find Mr. Jerrry-Dee

 

[Twiz]

Yours should be something close to this:


Houseing:
- 65.5" from flange to flange with the drums installed
- 47.25 from spring bolt to spring bolt (across the axle)
Shafts:
- .194" (5/16 ?) C-clip, thicker than the 10-bolts.
- 33 -spline
- 1.376 dia at the spline.
- 1.703 dia at the machined wheel bearing surface
- The shafts taperd in steps, 1.376 to 1.420 to 1.650 to 1.703
- 4.5" center hub dia.
- 8-lugs on this one

The truck I measeerd from was a 2000 C/K body, (4wd IFS) 4-doors and a short-bed. SBC and 8600 GVW. A bit of an odd option package.

 

[JERRY-DEE]

Thanks guys that was the info I was looking for

 

[rlhenry]

I just popped one of these 14 bolt sf in the rear of my '84 Blazer. I'm very happy with it so far and I got to keep the damn expensive 6 lug wheels!