14 bolt

[Nookster]

Hey Noob here, hope nobody throws rocks at me for this question but I just bought a 1991 K-5 Blazer and want to get started on it and don't want to get the wrong axle from the bone yard. I found a 14 bolt sf out of a 1996 3/4 ton 4x4 chevy. Is it a direct fit, spring perch and everything into my 1991? I poured through the forum and 1988 and earlier are clear but not some much the 89-91's
Thanks for your response.

 

[35]

Bring a tape measure next timr.measure your truck first the measure the axle you wanna buy.

 

[dremu]

Short answer is no, btw.

Bolt-up for your truck will be '73-'87 pickup, '73-'91 Burb/Blazer/crewcab, all in 4WD (2WD have different shock mounts.)

Newer (IFS) trucks have a different (IIRC, much wider) perch spacing.


-- A

 

[Nookster]

Thanks Dremu, appreciate it buddy.

 

[sweetk30]

88-up new body is 47" spring pad spacing .

our 73-87-91 square bods in 1/2 & 3/4 ton are 42.5"

and true 1ton trucks are 40.5"

so at min your doing spring pads and shock tabs .

if the ebrake cables are good grab them with the axle . so have reused them in there swaps to older .

metric lug studs over our American thread .

true 2wd is narrow over true 4wd .

possible u-joint swap over or yoke swap or drive shaft rework . depends on what level you wana do .

pop the cover and check the guts . I have seen a few over the years with bad carrier bearings or spiders . and fills the rear full of fine metal particals .

 

[Nookster]

Thanks Sweet, I've got it now.

 

[sweetk30]

deuling aka skinny pants here did the swap in his blazer.

don't bother saving old just do this stuff. http://www.ruffstuffspecialties.com/catalog/ = new perches and shack tabs . even ubolts all in 1 kit .

 

[cyclic]

If your moving spring pads anyway, go with a 99-04 Silverado rear axle. It gives you modern brakes and is a wider axle. Closer matches the front width.

 

[dremu]

Oh, aye, there's also the issue of lug count. The 14 bolts that will drop into your truck are all eight lug. If you don't mind switching wheels and re-doing your front, this is not catastrophic.

The six lug axles are all semi-float and come off later trucks so you'll hafta cut and weld.

-- A

 

[Nookster]

Yeah dremu, the eight lug 14 bolt easy fit is the way I'm going. I have a set of beater 8 lug and tires to go down and get new steely rims and 35" bfg's. Just trying to find a 14 bolt with 456 gears in it locally. I only want to move that 500+ pound beast once.

 

[dremu]

Yeah dremu, the eight lug 14 bolt easy fit is the way I'm going. I have a set of beater 8 lug and tires to go down and get new steely rims and 35" bfg's. Just trying to find a 14 bolt with 456 gears in it locally. I only want to move that 500+ pound beast once.

Fah. You get used to it. Engine hoist and car dollies.

And putting your chiropractor's kids through college

-- A

 

[sweetk30]

14 sf and 4.56 gears stock good luck .

better just grab the military truck rear with 4.56 and Detroit . then its a ff axle also .

 

[Nookster]

Yeah Sweet its looking tough. Maybe just look for one with the 4.10's and run 33's. I'm building more of an overland type vehicle. If I go that way I'll just get the ORD 2" springs in front and the 2 1/2" shackle flip in back. I'm trying to avoid the cost of re-gearing these 10 bolts. Just take the axles off a donor vehicle. More bang for the buck. Atleast thats what I'm thinking.

 

[paratrooper307]

See if you can find a matched pair. With the money I saved getting a used set of 4.10 3/4 ton 8 lug axles from a local guy I was able to buy some inexpensive 8 lug wheels, and probably spend what it would have cost to get a single axle from the junkyard. Plus they bolt right in, no welding needed.

 

[cyclic]

You'll wanna look at my 88 Suburban.
2.5 front lift, 2.5 rear flip, 265/70R17 tires (32 inches), 3.73 gears, 350 engine, 700R4 trans. Hummer H3 four piston disk over hub front brakes, Silverado disk brake rear axle including parking brakes.
It too is a daily driver build that should overland very well.

Here you can see the width of the 04 Silverado axle, no needing spacers to get the wider stance. And no additional load/leverage on the axle or bearings.

And here, hooked to my overland trailer. M1102 mil trailer with 265/75R16 tires. Eventually I'll swap it to six lug to match the truck. And also run 17 inch tires to match the burb. But the wallet is thin right now, building a car port and home remodel stuff.

 

[Nookster]

"Paratrooper", thats the way I'm going Brother, got a guy in the junk yard looking out. "Cyclic" your rig is just what I'm looking to do. I've got the 2" tuff country springs in the garage now and some new shocks. Should have the 2/1/2" ORD shackles tomorrow and also getting new tires tomorrow. I also went to the bone yard and found a roof rack off a 92 2 door Yukon. Its a perfect fit. So if anyones looking for that, 90's models Yukons and Tahoes 2 doors are a good fit for racks. Going to get this thing ready and take it down to Baja this winter camping, surfing and fishing with some friends.

 

[Nookster]

Cyclic, you've got the right trailer man.

 

[Nutro]

You'll wanna look at my 88 Suburban.
2.5 front lift, 2.5 rear flip, 265/70R17 tires (32 inches), 3.73 gears, 350 engine, 700R4 trans. Hummer H3 four piston disk over hub front brakes, Silverado disk brake rear axle including parking brakes.
It too is a daily driver build that should overland very well.

Here you can see the width of the 04 Silverado axle, no needing spacers to get the wider stance. And no additional load/leverage on the axle or bearings.

And here, hooked to my overland trailer. M1102 mil trailer with 265/75R16 tires. Eventually I'll swap it to six lug to match the truck. And also run 17 inch tires to match the burb. But the wallet is thin right now, building a car port and home remodel stuff.

How hard was it to use the E-brake cable setup from the 99-06?

 

[cyclic]

It's was really easy. I used the cables and everything up too the little metal u-bracket (sometimes called a balancer) that combined the two cables from the axle. Then I used a little threaded end on my existing cable from the truck. I had to cut the cable to length and install one of these on the end. It gave me the length needed and is adjustable. Lokar is just one manufacturer that makes the end, just search online till you find one.