Is 1st gen dodge cummins bellhousing different from 2nd gen?

Ok so i am doing a custom build putting a chevy nv4500 from a 96 k2500 into a 92 chevy k1500 that had a auto and i am also putting a cummins into truck so i need to change inout shaft and bellhousing so i was wondering if anything changed between 1st gen and 2nd gen cummins and if i can use my internal slave cylinder thats on my tranny now? Also what else may i have to change besides bellhousin, input shaft to mate my chevy nv4500 to the dodge cummins motor? Thanks in advance

I can only answer the first part of your question but yes there is a difference between 1st and 2nd Gen flywheel housings the depth is different

ok because i am getting a 4bt 1st gen motor so i just want to make sure because its easier to find 2nd gen parts. i so far have my chevy nv4500 complete from bell housing to transfer case so now i need to get a cummins 4bt motor and the rest of the parts. i dont think motor comes with adaptor that makes it so you can put a nv4500 tranny so i will need to get that and bell housing, input shaft, and maybe slave cylinder if the chevy one won't work and whatever else i can figure i may need

The block holes are the same so you can bolt on what ever housing you need to work with your trans, the nv4500 only came in second and very early 3rd Gen trucks so you will need the flywheel housing from one of them

ok so i use a 2nd gen bell housing. and a 1st gen flywheel or a 2nd gen flywheel?

I would use all second gen dodge stuff..
Flywheel, adapter plate, dodge input, dodge bellhousing, and dodge slave stuff. All is relatively easy to find.

Yup all second gen stuff hardest to find will be bell housing at least it is up here

The second gen rear housings are thicker then 1st gen. The second gens are same auto or manual also


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If you purchased the flywheel housing for the Chevrolet bell housing, you could eliminate having to find a bell or input shaft. Just make sure your flywheel will work. If your 4bt came from a bread truck, chances are it has a Pontiac/oldsmobile on it now.

Another option is the adapter bell housing from Advanced Adapters. You can use the first gen flywheel housing with diesel input shaft.

Otherwise, you need a flywheel housing from any cummins truck application that is 1994 or older. You'll need a bell from one of these trucks, as well, that had the NV4500. I think the gasser input is the same length as the diesel and I doubt the 4b will give it much trouble.

since it is a chevy gasser nv4500. would he not be able to use a chevy adapter plate? such as that found behind a 4bt originally equipped with a TH400?

The "bread truck" Chevy adapter is "tilted" some, as they did so to clear certain items.
Keep in mind, as compared to Dodge, both the Chevy and Ford set-ups used smaller clutches, but the Chevy was larger than the Ford.

Also, the 1st gen Dodge adapter plate accepts either auto or manual, as well.

Finally, since you have a 1996 Chevy NV4500 (Should have an external slave), the Dodge input and bell housing will both work.
1995 would have been the other gear ratio and the input's tooth count is wrong, as is the bell housing bolt pattern.

Mark.