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Keep in mind that the alpha tcase could still have a bad shifting fork. Its really quick and easy to pull apart to check. There was a rumor that alpha tcase always had metal shift fork but I have had two so far that were plastic.

Thats not the same thing as locking/ unlocking the center differential. Sounds like you may have the shifter fork issue

How did you confirm its in AWD vs 4Hi lock? Its possible the dash light shows AWD but the transfercase is actually locked still

An escalade 14 bolt semi float would be an easy option its already 6 lug and narrower than a h2 axle. Has wheel speed sensors as well.

Sidewall also plays a huge part in that. When we put the 37x12.5r16 on our company truck the ride was so much smoother than stock. Your H3 has us all beat in the sidewall department LoL

That would be the ideal setup! We were looking at modifying a kit for Fj cruisers that seemed pretty close but never took the plunge. Really what someone needs to do is make a replacement rolling chassis that people could order. Its becoming common for other brands and with all of the frames...

The motor would fit fine as its the same block as the 5.3 etc just need to switch to truck accessories or play with the aftermarket options for moving a few things on accessory drive. A bunch of people have linked the rear but not alot have done it at stock height from what I have seen. Its...

Thank you! Really hoping we can figure this all out. The gear driven trutrac limited slip dana 50 we have been running would be awesome with high horsepower builds. Makes the launch so much more predictable and prevents the side to side darting you get with AWD and open diff. We always wanted to...

Our friend that bought one of our H3 with the prototype air locked diff has already had the siberian bushings fail. We originally made parts for the S10 platform and we all used to run poly bushings but they failed pretty quick with the salt and constant wheeling. Im glad to hear you are having...

The outer sleeve is machined out of solid 6061 bar stock, bushing is UV stable UHMW carbon black and the center crush sleeve is DOM. We have been running the same set in a couple trucks since 2017 through new england weather and constant wheeling without any play developing.

Sounds good

Figured we would keep Chris' thread organized and bring discussion back here. The two issues outstanding: 1.) The larger plunging cv we tried at full droop makes contact with the lower control arm cross piece. 2.) Worn OEM lower control arm bushings allow 1/2" each side of track width change...

Chris when you get further along with the build lets talk about the diff. We still have a crate full of the dana 50 machined housings and shafts we had made and can talk further about what the deal is to overcome the couple roadblocks we are up against. On of our good friends bought our 6.0L...

Sorry we are not this year. Just sold our company H3 to a good friend of ours that has been testing the Dana 50 so we will need to build the next truck before we head out on a trip.

We were maintaining around 10 h3s at one point and were exclusively using powerstop z36 full kits with calipers as they came due for new brakes. Were were swapping over to powerstop and new stainless hardlines and soft lines with full fluid flush. About four years ago there was a national...

We ran their HD option on our 6.0L H3

Our best guess right now on the issue of the CVs is that of the four H3s that have run the diff, the three that did not have a problem were running our prototype billet aluminum sleeve/ UHMW carbon black lower control arm bushings. The truck we had at the vermont pilgrimage overland event in the...

Have not been able to figure it out. Same vehicle, same bushings, same housing, same part number cv shafts. Really frustrating we have crate of 5 housings and custom machined shafts just sitting collecting dust. One of our friends is running one in his H3 to log miles and trail time to see if he...

There is a company that makes a conversion kit for the H2 that allows install of 4l80. Kit for H2 It has a 27 spline output shaft and harness I believe. You would need to make a new transmission crossmember like we needed to do for our 6l90 swap along with transfercase adapter since h3 is 5 bolt...

You do not have to do that at all for a swap in a 2006. We swapped a 2011 6.0 and 2012 6l90 into our 2006 without running two pcms. Sorry someone gave you bad information its tough with the internet navigating something like a swap with so many different information sources. Check out some of...