1973 J4800 4BTA Cummins swap

[COLOFIREMAN]

The donor truck is a 1994 Grumman 24' van from the very rusty city of Chicago. I paid $1800.00 for it and it only has 123K on the whole truck. Before I bought it though I confirmed this through the company records and I was able to speak to the fleet tech directly. As it turns out the truck ran excellent and I even drove it 150 miles after I got it home. The best thing about the truck is it's a intercooled version and came with hydraboost. I plan to mate it to the a NV4500

I have a built D60 Chevy for the front and a D70 for the rear. Both have ARB's and 4.88 but I will be running 39's so I hope it will not be too deep of a gear. I plan to take the Premire Welder off of my CJ and the A/C converted air compressor, if I'm able to make it fit. Should be a tough vehicle so I can explore and not have to worry about breaking, elevation, MPG, or power when pulling the off road trailer I built to match.
Here's the van that I bought in Chicago.

[COLOFIREMAN]

This is the vehicle....

[COLOFIREMAN]

This is the first step to the swap is the easy part. New pictures to follow....

[COLOFIREMAN]

The motor I have in this truck is going into 1973 Jeep grand Wagoneer that I blew the motor on two years ago plowing snow. The wife wants me to sell it once I've installed the motor in it. I said, "Sure I will......", but inside I was thinking, "Not a chance"

[COLOFIREMAN]

This is the turbo I'm using, it's from a 98' Dodge 6BT. I'm also test fitting the manifold that I had cut and welded here locally, thanks CrewCab for the great idea!!! The guy killed about 6 rods welding it due to the cracks, thats what I get for a free manifold. Once I test fit it and get it running well I'll probibly use one from Mooktank. The manifold is also from the 98' 6BT

[COLOFIREMAN]

The transmission is going to be a NV4500 that came out of a 1996 Dodge truck. I also plan to run a NP205 Transfer Case. I'll have to machine the back of the transmission a little to enlarge and seal on the power-shaft that joins the input of the T/C and the output of the transmission.

[COLOFIREMAN]

This is the motor plate I found at a yard here. The guy didn't know what it was worth so I was able to "steal" it for $40.00.

[COLOFIREMAN]

These are the axles I'm using. Front is a Dana 60 that came out from under a Chevy one ton dually. I converted the hubs to single wheel and shorted the axle 4 inches to match the rear's 65" width. The rear Dana 70 is out of a 78 Ford tow truck that was a dually. I plan to change the brakes to disc. They're coming out of my CJ7 that I built some years ago. They both already have ARB's and 4.88 R&P, so I'm hopeful that it's not to deep of a gear because I plan to run 39" tires for deep snow, rocks, and sand. They're on a 12" wide rim that I have DIY beadlocks for.

[COLOFIREMAN]

This is the welder I brought many years ago from Pat at Premire. It has saved me and my friends many many times. It's worth it's weight in gold.

[COLOFIREMAN]

Found a picture of my off-road trailer.


It has a 3500LB axle, 35" tires, air vents, spray lined, and high clearance.

[COLOFIREMAN]

Need to move the van to a garage today for the engine removal.

Step two in the swap

[tazdog]

Thanks for bringing this info over here I didn't like going over to the other site to find it.

Also can you tell me what all the 4bt came in? I know that they are in chip trucks, but are they in any other self-propelled thing? I have found them in compressors & Gen sets but I don't know if they would work?

Thanks & keep the updates coming

There is a dark side in my future.

[COLOFIREMAN]

The best ones are the ones that come in the Chip trucks. But like they say on that site, try to contact the fleet manager on-site.

[Chevelleguy]

Pumps, Gen sets, compressor engines should work, you would just have to get the injection pump set up for automotive use.

[The PIG Smith]

I'm bringng this over from the www.4btswaps.com page that I belong to.

I am a member there also.
I would also ask that you make some postings over at the http://messages.jeep2diesel.org/ forum also.
It was down for a while and is now back.
The activity is slow, but is building as folks know the site is back and folks start to participate.