6 Lug to 8 lug

[darren250r]

That swap wont work on a 4x4. You cant swap to 3/4ton suspension. Mounts are set up different. Only option is adapters for the front. You shouldn't have any alignment or balancing issues. Only down fall is that they will act as a spacer too, so you would need spacers or adapters in the back to make them the same width. Most 8-lug guys wish they had the wheel choices that 6-lug guys do, but good luck. Plus, 16.5's don't hold a bead and can't be aired down very much.

 

[dirtyhick42]

That stuff is for a 2wd. I "believe" the upper control arm mount on a 4wd is different from a 6 lug to an 8 lug.....I am 99% positive on this. They only way to 8 lug the front is SAS or adaptors.

That swap wont work on a 4x4. You cant swap to 3/4ton suspension. Mounts are set up different. Only option is adapters for the front. You shouldn't have any alignment or balancing issues. Only down fall is that they will act as a spacer too, so you would need spacers or adapters in the back to make them the same width. Most 8-lug guys wish they had the wheel choices that 6-lug guys do, but good luck. Plus, 16.5's don't hold a bead and can't be aired down very much.

I knew I spoke too soon and that it wouldn't really work like I had already said earlier in this thread.

 

[nine4gmc]

yeah, i missed the "K" in his first post, it will only work for a 2wd obs.

 

[RHamill]

yeah, i missed the "K" in his first post, it will only work for a 2wd obs.

The name of the thread says "6 to 8 lug".

Right away, 6 lug = 4x4.

 

[darren250r]

The name of the thread says "6 to 8 lug".

Right away, 6 lug = 4x4.

Unless you're talking about a LD c2500. Either way, its reasonably obvious from the pic in his sig what we're dealing with...

 

[davbell22602]

The name of the thread says "6 to 8 lug".

Right away, 6 lug = 4x4.

2wd were 6 lug also in 1/2 ton.

 

[96k1500]

2wd was 5 lug until it switched to nbs then they changed it to 6 lug

 

[davbell22602]

2wd was 5 lug until it switched to nbs then they changed it to 6 lug

Nope your wrong I had 88 C1500 with 6 lug wheels with wheel adapters. All 1/2 ton gmt400 were 6 lug.

 

[96k1500]

Well ive never seen one and ive worked on several, i had the front end apart on one last week and workin in junkyards and friends and family members that have had them have all been 5 lug

 

[MOBS]

^All half ton gmt400s that were HD models were 6-lug, the standard half ton gmt400 is a 5-lug. The thinnest adapter you can run for 6-8 lug conversion is a 2" I think, and I'd recommend a cnc'd steel or machined iron adapter. The reason wheels don't balance due to adapters is because the adapters were incorrect hub bore size. If you decide to use adapters, I'd personally rebuild your brakes....it would suck to have to undo all that soon after due to having to do brake work.