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8lug swap completed

unik5

unik5

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Hey guys im having some problems swapping over the hubs on my 10 bolt I dont know what the hell im doin wrong this time :doah:

Ive got an 87 Jimmy with a 6 lug 10bolt. I went to the junk yard, pulled hubs off a 10bolt k20. got new races, bearings, pads, etc. I went to Collis truck parts and got caliper brackets for a k20.

On the test fit the back of the 8lug hub grinds on the 6 bolts that hold the caliper brackets on.

Here are a couple of pictures..

8lug hub
8lughub.jpg


6lug hub
6lughub.jpg


8lug caliper bracket
8lugcaliperbracket.jpg


6lug caliper bracket
6lugcaliperbracket.jpg


Thanks for the help :thumb: much appreciated
 
I can't really see this happening, but gm made 2 size spindles back in the day. All 10 bolts had the bigger inner bearing in relation to the older Dana 44 half tons. It looks to me like you're 10 bolt somehow ended up with the small spindles. Allowing the 8 lug hubs to slide on way far.
 
Easy to tell, a 10b has tabs (or "ears") on either side of the bottom of the pumpkin.

Edit: that's a 10b.
 
Ahhh sweet. So then how can I figure this out? Is there a possibility of wrong hubs/ caliper brackets and is there a way to tell?

The bearings and races are the same hub to hub.
 
my new seals went on a little tight. everything is cleaned off on the spindle right? i put a little extra force and got it seated.
 
This is the large bearing spindle off my '79 3/4 ton 8 lug D44. You have a 10 bolt like Beast said. But those spindles look different than mine, however, some measuring or closer picture would help.

Picture 045.jpg
 
It might help to have a pic while the hub/rotor is on so we can see where the problem might be and also a pic with an arrow showing exactly where you think the hub is rubbing on the 6 bolts.
 
Well shoot. I cant even get the new hub on the right side. On the left side i could but it rubbed where the screw driver is pointing(the insides of the nuts)
8dc961fd.jpg


e90d74e3.jpg

0859edbe.jpg


I cant mess with it too much today because i need my truck for school this week (daily driver)
786a93df.jpg
 
The only thing that would allow the hub to rub on those bolts is if there is significant wear on the spindle allowing the hub to go back too far.
 
compare your bearings to the old ones. Make sure they are the same. The races could be pressed in correctly, or even incorrectly, and not have this problem. But if the bearings are narrower than the old ones, they wont bottom out on the spindle quick enough, causing this problem. I don't know if it's even possible, just thinking out loud.

Those spindles look like mine, which would be right for a big bearing.
 
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I get what your sayin. I'll have to look when I have time to tear it apart again. Im out of light and had to put it back together. Hopefully it'll be before this weekend. But thanks for the help you guys I'll definitely update the thread when Im back in the axle.:waytogo::bow:
 
I have no idea what a c20 front brake setup looks like but what are the differences between the caliper brackets from a c20 and a k20? On my caliper brackets one says 84 c20 and the other one says like 85 k20. I took em back up to the place i bought em from and he said theyr off of a k20 but i just wanted to make sure..
 
not sure, those would be hard to get part numbers for to cross-reference.

I can't see them being anywhere close to the same though. I've never taken apart a 2wd square body though.
 
unik5 said:
I have no idea what a c20 front brake setup looks like but what are the differences between the caliper brackets from a c20 and a k20? On my caliper brackets one says 84 c20 and the other one says like 85 k20. I took em back up to the place i bought em from and he said theyr off of a k20 but i just wanted to make sure..
Click to expand...

The "caliper bracket" on a C20 is an intregal part of the spindle unlike a K series which is a bolt on item.
 
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