14 Bolt S/F

[Tiger5]

Its finally time. I have a 14 bolt 6 lug semi float rear end out of a 1992 Z71. I just sand blasted it and primed it. I need to order the spring mounts and shock mounts to have welded on. But I need to know what carrier to use. Keep in mind it’s going in my 1986 K5 with a built 5.3 LS and a built 4L60. I have 33 inch tires and I plan on using 3.73 gears. I will rehear the front as well. But my question is what limited slip type carrier should I use. Obviously I will need all bearings seals and related stuff. Is there a company who sells all this stuff and has any one had experience with them. The current carrier is an open style. Oh and finally I am NOT doing any heavy wheeling or towing. Thanks.

 

[Bent77]

If I was looking for a limited slip, I’d probably buy an Eaton myself. Good product and good reputation

Second choice would be a TruTrac

This thread is also good
https://ck5.com/forums/threads/14sf-tech-info.135125/

 

[Bent77]

One of these
The wide disparity of prices are suspect though

https://www.summitracing.com/search...5-in/cover-bolts/14/crush-sleeve-included/yes

 

[Blue85]

Are you sure the current carrier is open? A lot of those axles got gov-locks and they act just like open when checking from the outside. It also might be a good fit for what you do since it's so streetable.

Also consider 4.10. Few with overdrive regret deep gears.

 

[6872xtc]

While I live at a different elevation than you, which affects engine performance, I liked the 4:10 in the 6 lug 14BSF. I only had 33's with it, but the tired old TBI 350 did well with the combination. It had a Gov-loc 8n it which worked well for what I did. However, if you don't have a Gov-loc, I like how the Tru-trac in my '70 acts.

 

[Wes Harden]

3.73 a 700r4 and 33s you will idling at 65... Well not quite 1700, 1400 at 50

Exit err 4l60

 

[500$k5]

My '78 with 3.73's, 700r4, and 33 in tires, turns 2100 rpm, @ 75 mph. Must drop to drive, on small hills. I second the thought of 4.11's!

 

[imiceman44]

3.73 a 700r4 and 33s you will idling at 65... Well not quite 1700, 1400 at 50

Exit err 4l60

Yeah my suburban had 3.73 with 33" tires and 700r4, it was driveable but when I blew the rear 10 bolt I upgraded to a 14bff 4.10 gears and now it's great.
It was better with the stock 265/75/16 which is roughly 31.5" but 33" are doing fine and I can tow a boat comfortably, maybe not the k5 on a trailer though I would go back to stock tires for that

 

[ZooMad75]

4.11's. You'll be much happier with the performance and your 700r4 will be happy.

As far as the traction device. Tru-trac all the way if it don't already have a gov lock in it.

 

[Fastereddie]

^^^^^4.11^^^^^

 

[Tiger5]

It’s done. The 14 S/F came with 3.73. So here is how it went. Bought a Yukon Dura grip for the 14 s/f and all new bearings. Bought Off-road Design shock tabs, spring perches and U bolts. Sand blasted reared and painted. Took K5 to installer. He Installed the rear end. Including all new brakes hardware and brake cylinders. He took front end apart and replaced ALL wear items. Ball joints and etc... Installed new 3.73 gears with all new bearings. It’s done. And I love it. Going from 3.08 to 3.73 with 33 inch tires. And I have overdrive. It’s more fun to drive and with new ball joints and the like it handles much nicer. I may upgrade my differential cover next.

 

[Tiger5]

Here we go.