What is the difference between an 88 - 14 bolt axle and an 89 -14 bolt axle?
CK5
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Differences in 14 bolts
- Thread starter BoondocK5
- Start date
I know the ribs on the housing. I think the third pinion bearing may be larger and somewhere around there I thought the drum design changed, but don't quote me on that. never had my 89 drums off.
[FONT=Arial, Helvetica, sans-serif]Second design axles have more fins on the center sectionFirst design axles 1984 and earlier use a different pinion straddle bearing than 1985 and later[/FONT].
[FONT=Arial, Helvetica, sans-serif]Second design SRW axles in 1-ton pickup trucks and 3/4 ton Suburbans changed to allow for a slide-off drum (drum can be removed without pressing out the wheel studs). The backside of these hubs is not machined flat to accept a rotor, for example. The hub flange is also further inboard to allow for the thickness of the drum.[/FONT]
[FONT=Arial, Helvetica, sans-serif]Second design SRW axles in 1-ton pickup trucks and 3/4 ton Suburbans changed to allow for a slide-off drum (drum can be removed without pressing out the wheel studs). The backside of these hubs is not machined flat to accept a rotor, for example. The hub flange is also further inboard to allow for the thickness of the drum.[/FONT]
the drum / hub change over is not 100% givin fact.
i ama auto mechanic and i have seen lots of pop off drums and old style non pop off drums on the newer axles.
you got to look to be sure.
and the pop off drum style has totaly diffrent hubs and axle spindles. thay will not swap around. diffrent disk brake kits also.
i ama auto mechanic and i have seen lots of pop off drums and old style non pop off drums on the newer axles.
you got to look to be sure.
and the pop off drum style has totaly diffrent hubs and axle spindles. thay will not swap around. diffrent disk brake kits also.
The reason I ask is, I bought a mini install kit, basically so I can re-seal the pinion carrier on y 14 bolt. the box says "88 and older 14bolt". My truck is an 89.
I went back to the web site I purchased it from and the scroll down option has two choices 87 and down, or, 88 up, Mine would be the latter. But, like I said, the box is labeled with a tag the states it is for "88 and older". So, needless to say, I'm a little concerned.
I went back to the web site I purchased it from and the scroll down option has two choices 87 and down, or, 88 up, Mine would be the latter. But, like I said, the box is labeled with a tag the states it is for "88 and older". So, needless to say, I'm a little concerned.
if you are not changine bearings then you should be fine.
its the 1 bearing size in the pinion housing that changed. then around 98-99 ish thay got a diffrent seal style.
its the 1 bearing size in the pinion housing that changed. then around 98-99 ish thay got a diffrent seal style.
Thanks!
k20
3/4 ton status
Yeh the changes arent hard and fast. My 14bolt came out of an 88 burban and it has the super ribbed center section, but the old style hubs.
The 14 bolt in my '91 V3500 crew cab was like this.
Also, when installing gears TARussell and I discovered the pinion carrier was different from the '76 axle in my wheeler. I can't remember which bearing was different. We ended up installing early style 4.56's w/ their original diff and pinion carrier (CUCV parts) and everything was fine.
two diff straddle bearings:
Post 86
http://coloradok5.com/forums/showthread.php?t=261694&highlight=straddle&page=2
Post 86
http://coloradok5.com/forums/showthread.php?t=261694&highlight=straddle&page=2
