Camber after NBS 8lug and 9.25 swap

[Supercharged111]

Check out this blast from the past, start on page 1. 9.25 diff only swap requires the diff, passenger side mount that bolts to the frame, and the axles because they're longer. And of course that one mount extended.

https://www.gmfullsize.com/threads/1-2-to-3-4-ton-front-diff-swap.64681/page-8

Now with a link.

 

[Supercharged111]

I wish someone made new frames for our trucks, like what you can get for jeeps and Landrovers.

If only junkyards in the SW sold rot free frames.

http://www.car-part.com/cgi-bin/search.cgi

I'll bet $5 that link doesn't work.

 

[GMC Burbalade]

IIRC Chris 9.25 swapped his lifted Yukon. Seemed fine at first then ran into binding issues on compression due to the 9.25 and 2500 CVs being slightly wider overall than the 8.25 and 1500 CVs. Or maybe the height wasn't correct on the diff and the CVs weren't swinging on a radius close enough to the control arms. Either way, he's got a solid axle under it now.

 

[Supercharged111]

The 2500 axles are longer by a smidge. Luckily I own both a 6 lug and 8 lug, so could measure installed lengths of both to compare. Mine's not lifted (small crank), so that variable doesn't exist. Only challenge is to get 8.25" width flange to flange. The secret sauce may be a hybrid of the 2 axles if that's feasible.

 

[GMC Burbalade]

Taller diff requires more room, everyone that I've seen do that swap was lifted.

 

[Supercharged111]

I see. That one in the thread above got the case shaved, don't recall if it was lifted or not. Something to keep in mind. Then again, @98chevy2500SS did the swap by welding in new upper mounts, I don't remember him shaving? I won't pull the trigger until I have more time and am more certain of the challenges. For now, I have the diff with only 140k on it and regret junking the rest of the truck with the CVs still intact and that mount. I should also point out that, after re-reading this thread, I mixed up 3 different trucks with 9.25 swaps.

 

[454cid]

Those

If only junkyards in the SW sold rot free frames.

http://www.car-part.com/cgi-bin/search.cgi

I'll bet $5 that link doesn't work.

Those would be used stock frames. I'd want something built a bit better and ready for upgrades....and galvanized would be nice.

 

[Supercharged111]

Those


Those would be used stock frames. I'd want something built a bit better and ready for upgrades....and galvanized would be nice.

Just ask that guy building a pro touring truck on here to make you one.

 

[454cid]

Custom is mega dollars.

 

[1998SSLT]

There are a bunch of reasons I'm *thinking* of doing it.

1-no 3/4 ton Yukons/Tahoes.
2-can't swap frames. Refer to #1. Thought bout a burb frame, shortening it, but that's a rather large task. I don't even have a garage.
3-want 4.10s. I can get 3/4 ton GMT-400 and 800 parts cheap. There is a metric **** ton of them in one yard, I have access to prolly 5-6 with almost as many. Yeah I can buy 4.10s for the stock 8.25, but would have to pay someone to install them, prolly $500 all together.
4. I want 8 lug. I have a set H2s that look pretty good on the Yukon. 8 lug wheels are all over. I have a 14 full float axle with 4.10s just about ready to go in the Yukon. Not that I'm gonna go crazy, but don't have to worry bout breaking a 14 bolt. Govlock or not, they are tough.
5- bigger brakes. its what got me here, reading the post on the GMT-800 brake upgrade, someone said it would work with 8 lug too. So, here I am.

Like I said, I'm thinking of doing this. I have 90% of the parts to SAS it. DIY4X SAS kit and crossover steering kit, 2 sets of springs, 4" 48s and stock 52s, complete outer rebuild for the HP44, carrier rebuilt kit, new 4.56s if I decide to run those, a Powerlock, DIY4X shackle flip, sure there is more but get the point. Bout only thing I need is calipers/pads/brakelines, and u-joints for the front axle. The H2s already have 35s on them, so would be good for the overall lift.

Yukon is in pretty good shape for being a 96 and in the north east. Don't see too many like it, lifted or not. Having a whipple is a bonus. Having it SAS'd would be even better. Right now just want to get it going and on the road. Get the feeling gonna need brakes all around, and with my luck new calipers. So if I need to do brakes, why not do em once, with 8 lug stuff. Least how I see it.

I might go to the yard and grab an upper off off a 3/4 ton as see if it will go on or not. Think that will answer a lot of questions!!

Good day! I know this is an older post but did you ever try the 3/4 UCA out to see if it would fit?