The VHO and SS trucks don't have a G86. The SSR and TBSS rear has the G86 which is using a Torsen unit (also using the 9.5" 14 bolt). I don't hold that much higher than the Gov-Lock. If you want to see pictures of the 14 bolt in question I have pictures of that and the rear brakes in my picture trail for those that want to look at it. 15's will fit right over the newer style rear brakes, just not the front. Since you only need the rear, you will be fine just as Quick has found. Even though there is alot more extra cost, you're better off getting the newer rear end since the swap parts for the old style rear might run you just as much as it would be to just bolt the new style rear end in with alot less hassle.

 

correct

 

does anyone know if you can convert a full floating (FF) 14 bolt rear end to a semi floating (SF) 14 bolt! comes out of a 99 or 00 silverado 2500... also if people are only 2wd why dont they just go with the FF 14 bolt rear? they are WAY stronger then the SF well beside having to run 8 lug in the back and 6 in the front!

 

are you sure the ff is stronger? i thought it had smaller axles.

 

Yes, you can, but it's actually "non-floating" instead of "semi-floating". I have one. It uses custom axle shafts with pressed on ball bearings and tube ends just like a Ford 9". If you pop the differential on one of these the axle shafts will not come flying out. These use a sealed bearing, the diff fluid seal is internal and cannot get dirty. Overall it's not as strong as leaving it full-float would be but you get the advantage of the massive center section with the pinion supported by bearings on both sides, also like a Ford 9" The 10.5" carriers are huge with three spiders for locker and posi and four spiders for open.
There are only two advantages to this setup over keeping it a full-floater:
- It uses the same brakes as a 9.5"
- 6 ligs rims fit.
The major disadvantage is that it's difficult to find a guy willing to build you one. Lots of labor so it's expensive.

 

The FF is stronger, 10.5" ring gear, 3rd pinion support bearing and 30 spline coarse axles(OD is slightly over 1.5"). The problem is weight and that they are all 8 lug. You can buy 6 lugs hubs at substantial cost($500+), but the requirement includes swapping to discs(which is fairly cheap compared to a lot of other axles as well as well supported). Another option is having the stock hubs filled, turned and redrilled. You will have to turn the axle shaft mounting flange as well or you will be required to remove the shaft each time you pull the tire as the ID on the 6 lug wheels is smaller than the OD on the stock shaft flange.

The 14SF, is a 14 bolt(the cover bolts are the only thing that counts, not ring gear bolts). It does have a 1350 yoke stock. Decent axle, easily on par with the Chrys9.25 and Sterling 9.75".

GM never put a Dana axle behind the 454SS's, only a 5 lug 14SF.

The D60 in your standard trim is kind of a clunker, 30 spline fine shafts(just like the 10 bolt or your average D44) but the larger 9.75" ring gear.

The Ford 9" in stock trim as well is not desirable and requires significant upgrades like a 35 spline conversion and a nodular 3rd.

 

My advise to you is if you get a newer style make damn sure all of the brake parts are there. When I popped the curb a few months ago It cost me about $360.00 for one drum a set of shoes and the springs. And that was with a shop discount. None of the aftermarket parts stores carry the shoes for the VHO's and 2wd SSS. So you will have to source them from the dealer at B.S. prices if it doesnt have them on there.

my rear came with a G80 which I replaced with a True Trac.

 

or you could just swap on disk setup from a 10 bolt on your SF 9.5" 14bolt

 

Could you elaborate on this further? Since you have both rears in your possession and both sets of brakes can you see what all it would take?

 

simple really bud, just take the complete setup. backing plates, calibers and lines and rotors and bolt them right up.