8 lug Dodge hubs bolt up to 6 lug GM knuckle?

I saw a vague mention of this in another thread and I have no idea where that was. I feel like this would be more popular if it was bolt on and go. Has anyone bothered and does anyone know what I'm talking about? I have my doubts that an 8 lug knuckle would bolt on and go seeing how different the UCAs are.

I remember seeing this on Pirate4x4 I think, someone did a solid axle swap on a Burb using a Dodge axle and swapped the hubs to Chevy 6-lug.

Someone did try it, which I think the difference is the hub bolt pattern that bolts to the knuckle, the spline count on the axle shaft part, and trying to find rotors to fit the whole set up.

I could be mistaken though, I'll have to find it again to check but I think those were the main limiting factors to swapping to 8-lug Dodge hubs on 1/2 knuckles

Ahh, I'm not interested in a solid axle. Just hoping to run down the details of what I think I remember here.

I've seen 8-lug Dodge hubs that might swap with 8-lug Chevy, but I don't think the Dodge hubs had ABS provisions. I was hoping to gain rotors that would slip on and off without having to go the GMT-800 route. Once I found that I'd lose ABS I didn't pursue it.

I kind of doubt that Dodge uses the same 3-bolt hub pattern for any of their 8-lug trucks that GM uses for 6-lug trucks.

Supercharged111 said:

Ahh, I'm not interested in a solid axle. Just hoping to run down the details of what I think I remember here.

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I was saying they discovered the swap possibility because someone was doing an SAS and converted the Dodge hubs to 6-lug Chevy hubs.

454cid said:

I've seen 8-lug Dodge hubs that might swap with 8-lug Chevy, but I don't think the Dodge hubs had ABS provisions. I was hoping to gain rotors that would slip on and off without having to go the GMT-800 route. Once I found that I'd lose ABS I didn't pursue it.

I kind of doubt that Dodge uses the same 3-bolt hub pattern for any of their 8-lug trucks that GM uses for 6-lug trucks.

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I think the bolt pattern was similar enough they could be interchanged with enough modification.
I'll have to find that thread again now, I had it bookmarked for the longest time;

The wheels likely swap one way but not the other as 1 hub bore is likely larger than the other.

you guys are missing his point.

He wants to convert his 1/2 ton IFS 6 lug truck to an 8 lug. There was some chatter that you could use a dodge 2500 hub bearing assembly to achieve 8 lug on a 6 lug IFS. I don't believe it was accomplished though.

86454k30 said:

you guys are missing his point.

He wants to convert his 1/2 ton IFS 6 lug truck to an 8 lug. There was some chatter that you could use a dodge 2500 hub bearing assembly to achieve 8 lug on a 6 lug IFS. I don't believe it was accomplished though.

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This is what I was thinking of. I only saw a mention of it, not a post of it's success.

That's what I was saying; sorry for any confusion. There was somebody on Pirate4x4 who attempted it but ran into an issue with trying to find brakes for it.

Here's one lead on it, I had a bunch of links saved but wound up deleting them all when I got my K2500; already 8-lug.
The discussion is mainly about NBS trucks but they do mention some OBS rigs too,
https://www.pirate4x4.com/forum/chevy/924103-gm-ifs-8-lug-conversion-2.html

Not gonna lie, they hub that guy machined out looked interesting as hell,

I considered doing this to my denali for a LONNNG time, so I did a ton of research. I figured this information would be useless, but here goes:

I think for this to work on an OBS, you'd need to drill the threads out of the wheel bearing, and use 3/4 ton calipers/brackets (if they even bolt on?) It would be a royal pain to bolt on the bearing considering the rotor is pressed into the studs/bearing from behind. I haven't done much research on obs stuff though.

I have gone to a junkyard and measured for the sake of comparison on the NBS stuff, and the rotor offset is extremely close between the dodge rotor/bearing and a NBS rotor/bearing. The issue comes in the dodge rotor being thicker, and 12.5" instead of 12. I THINK with a brake caliper/bracket from an 05+ truck with 13" rotors, it would work. However, as stated on that pirate thread, it's easier to go with a full GM 8 lug knuckle, and have the UCA's machined to fit the correct ball joint. Then you get a MASSIVE brake upgrade as well.

Someone with more time and money than I needs to buy some of this stuff and bolt it together to see what happens.