The TC was from a 96 Blazer. Mine is 95. It looks they changed in that year the TC. I think the difference is -96 the adapter has 4 bolts inside on the transmission side. The 96+ has 6 bolts outside on the transmission side. My problem is now that I have invested a lot time and money to that project...

Got the part today. It does not fit ](*,) . I was pretty sure that it's the right one. It looks there are different 233er out there, with different "input covers" they have not the same diameter. Found these pictures in google. I have now the wrong combination :cry: I consider just to dril...

That’s a good idea. I did a quick check and it looks that I can change the yokes where going to the transfer case.
So I use the Astro driveshaft with the Blazer transfer case yoke. The question is if the length will fit…
Still waiting for the adapter plate.

That’s what I thought. But the big hole is 2cm smaller then as it needed from the 233er. I found and ordered now one on ebay. That should fit. Unfortunately I found another issue. The Blazer universal joint from the rear driveshaft has diameter 28mm and the original Astro 30mm. So I can’t connect th...

I got finally the time to start with the swap. It was looking good, since I want to mount the 231 to the transmission. It does not fit :cry: . Then I realized, that I forgot an important part from the Blazer. I have not dissembled the adapter plate. #-o Unfortunately the Blazer is already gone. Does...

Short update: Got all the parts out include the whole front diff. Finished the wiring so far. It shift elecrical to all positions. Waiting now for better weather to finish the mechanical part. Is it possible to change the whole diff and use the original drive shafts? What about the ratio? I plan to ...

Will do that, thank you.

Hi guys Sorry for asking again, but I am struggling a little bit. I have now all mechanical parts out of the Blazer. As far I can see, I have an Issue with the front drive shaft. My Astro has flanges on both sides. The Blazer has a u-joint on the diff side and a slip-yoke on the transfer case side. ...

Just saw that is the electric shift. So will continue to disassemble...

Hello
I Bought a cheap 1996er Blazer today. As I was at home I saw that it has the NP233C installed. Is that a issue to swap this to my 1995er Astro?

Daniel

Pull out the messurement stick and smell on the fluid. If it smells burned change it and dont forget the filter.

The 242 conversion looks a lot of work. We had not so much snow the last view years where I life. In canton Uri they have probably lot more.
For me the main reason is to have a low range. I think I will go with a 231 or 233 depend what I will find. Maybe include the front axle.

Thank you for the answers. Very useful link. Now it’s clear why people talk from a bolt on. That’s just for the 1999+ Vans with NP136. So the challenge for me is to rebuild the drive shafts. @photo_van Saw you have converted a NP242j. I have a NP242j store in my garage from my Jeep times. Do you thi...

Hello I want to swap my BorgWarner transfercase in my 95er Astro with a two speed from a Chevy Blazer. I have read a lot of treats here but I still not sure, which transfercase I need for a bolt on swap. Can some one from the experts out there please tell me what is the best transfercase for my mod?...