IRS in a gmt400

[Shwa Kid]

Those mounts are not done they will be supported better soon. The third gen sat in someone’s yard for 15 years, previous owner(a family member of mine) was able to pick it up for free. He put a few parts on it and then sold it to me. It has a large number of issues but most are cosmetic. Besides the engine being due for a rebuild. It runs but has a misfire and smokes.

Looks like an awesome deal, should be a fun project.

Have you test fit CV shafts yet? I know the GMT900's managed to just sneak by beside the shaft, but your cantilever design should allow tons of space.

 

[Alteca]

Looks like an awesome deal, should be a fun project.

Have you test fit CV shafts yet? I know the GMT900's managed to just sneak by beside the shaft, but your cantilever design should allow tons of space.

Yes I test fit the CV shafts this morning. The boot just barely touches the tube going up to the cantilever but only when turned full lock and drooped down a bit. I am going to add a spacer to push the bottom heim out maybe 3/8” and it will have plenty of room then.

 

[Cordo]

The only thing missing is 4 wheel steering. lol Great work and documentation!

 

[Alteca]

Figured I would start on the fenders while I’m waiting on a few other parts. I’m still tweaking the shape but it’s coming along. I’m trying to keep a somewhat factory appearance but with the extra width I need to prevent rubbing on bumps. Yes I know the camber is very excessive in the pics, I have since changed it to 2 degrees.

 

[Alteca]

back to school 4 days a week so that’s definitely slowed me down but I’m making some progress. I’m not completely happy with the fender but I also don’t want to remake it. I think it looks fine but it might still rub under a hard turn and hitting a bump. I didn’t want to make it wider because I didn’t like how it looked.

 

[GrimsterGMC]

back to school 4 days a week so that’s definitely slowed me down but I’m making some progress. I’m not completely happy with the fender but I also don’t want to remake it. I think it looks fine but it might still rub under a hard turn and hitting a bump. I didn’t want to make it wider because I didn’t like how it looked.

I did a similar job a long time ago and I removed the coil before I started so that I could articulate the wheel through all its positions to check for clearance with just a jack under the lower control arm and the car would stay sitting level.

 

[GrimsterGMC]

I did a similar job a long time ago and I removed the coil before I started so that I could articulate the wheel through all its positions to check for clearance with just a jack under the lower control arm and the car would stay sitting level.

Forgot to mention that it looks great.

 

[0xDEADBEEF]

back to school 4 days a week so that’s definitely slowed me down but I’m making some progress. I’m not completely happy with the fender but I also don’t want to remake it. I think it looks fine but it might still rub under a hard turn and hitting a bump. I didn’t want to make it wider because I didn’t like how it looked.

Better than I could do.

You could camber the wheels in. I have gotten away with up to -1.5 degrees on the street without killing tires too quickly. After -2 degrees I get around 15-20k miles before the cords are showing, but usually I use them up on the track way before that happens.

 

[Alteca]

Made a bit of progress recently. Alternators are mounted although I’m still not sure how to wire them together properly. Battery is mounted to the frame under the bed. Everything suspension related is at least tacked into place. Steering is all hooked up. I have not replicated the fender on the passenger side yet. Haven’t decided if I want to remake it or go to a shorter tire but i know if I leave it, it will rub in certain situations. I think the best option is to remake it but if I make it wide enough to prevent rubbing, I don’t think I can retain that factory type look I was going for. I didn’t plan on going for that crazy wide body look but that might be what I end up with.

 

[95burban]

Did I miss the reason why you’re running two alternators? Sweet build!