Cory's Cummings swap

[YROC FAB.]

Recipient:
So i picked up this sweet rare 84 Dodge crew cab short bed juanton 4x4 from a friend about 3 years ago. I got it with the intentions of making a sweet tow truck out of it and now everything has lined up right to start working on it.

Donor:
My current tow truck has been a low miles ugly 94 single cab long bed 2wd cummings with a 5 speed. The only things i have liked about it have been the beast of a motor the mighty 12v has been and the interior is super clean. I hate the look of 2nd gens let alone a single cab with crappy paint. Luckily it was cheap enough and i have used it for the last 4 years with all my towing duties that i dont feel bad gutting it at this point.

Heres the crew cab shortly after i got it. First thing i did was get on ebay and score a sweet windshield visor for it and some amazon roof cab lights. Next i replaced the rotten d/s floor. Other than the d/s floor there is a small corner of the rocker with rust. The rest of the truck is a little beat but nothing im going to cry over. Other than that i have swapped out the wheels and tires with more modern ones that you see later on.

 

[YROC FAB.]

Last night i gutted the 2wd nv4500. It needs to be gone through before anything can really get done. I will be swapping a gm 32spline 4x4 main shaft into it and bolting a gm NP205 behind it. It will get a new clutch as this one was about on the rivets, it may of even been the original clutch in this thing. The truck has right at 182K miles on it now. i got it at 165k.



Committed now lol

 

[Kiel]

Nice, have s friend that converted a 4 door gasser to diesel, you'll be in good company

 

[RustEoldtrux]

I swapped the cab and box from a '86 1/2 ton, 2we Dodge onto a '91 3/4ton CTD frame and running gear about 15 years ago. It was mostly a bolt on fit.

 

[YROC FAB.]

I swapped the cab and box from a '86 1/2 ton, 2we Dodge onto a '91 3/4ton CTD frame and running gear about 15 years ago. It was mostly a bolt on fit.

Ya i have already tracked down some 1st gen motor mounts, Hoping the xmember on this 84 will work out with them. I did find a inter cooled 1st gen core support but would like to use my 2nd gen inter cooler if it would fit and by fit, i mean fit behind the grill. I will molest the current core support to make it fit but if it wont fit behind the grill then i will go air to water inter cooler. i dont like how inter cooled 1st gens have the grills sticking way past the fenders and hood.

 

[Coco]

Nice.... I am glad to see this coming along, but of course with your shop, tooling, and skillz I am always envy of your builds. Nice work broski.

 

[Herzog]

Hell yea, following this for sure

 

[Bart]

Love this project and often thought it would be a blast to do one. Keep the updates coming.

 

[YROC FAB.]

We gutted the tranny and all the oem Timiken bearings look great. Waiting on the 4x4 gm main shaft, updated 5th gear lock nut and input seal, and spacer to bolt the 205 up. i already acquired a gm tail housing and a round pattern 205.

Im not a Dodge or Cummins loyalist. I like all makes and models and prefer some parts to others. I like the simplicity and reliability that goes with the Cummins engines. I like the interchangeability with chevy drive trains. I love fords continuance to improve and used Dana 60 front axles. I love old shit box Toyotas for around town getters. I wanted a 4door crew cab square body chev for the longest time before i found this dodge. I also love trolling those that are loyalist to a certain make because their daddies dads dads bought one off the assembly line 300 years ago and so does my buddie Brian. Brian had this sticker made for me for Christmas a few years ago and now it has a proper home.



That time i got stuck in my own drive way in my ugly single cab Cummings. I literally let the clutch out slow and it never even moved in the slightest. I could just kind of feel it sinking lol.



Toyota getter for the win. 👌

 

[The_Lobbster]

Sweet project! Wish I could find a donor truck like that, seems like everybody still wants $4-5k for a crap box high mileage, and wrecked unit. Been looking at buying a school bus for a donor if my project ever comes to fruition.

 

[glockman]

World class trolling. Love it! All it needs is a bronco on diff and an elephant on the tailgate Better yet, you could put a bronco and an elephant on it and name if after my favorite canyon on highway 6.

 

[YROC FAB.]

World class trolling. Love it! All it needs is a bronco on diff and an elephant on the tailgate Better yet, you could put a bronco and an elephant on it and name if after my favorite canyon on highway 6.

Not happening on this ride. The difference between this and the bronco is I do all my own work on my projects.

 

[YROC FAB.]

Current pic of the crew cab with the newer wheels and tire combo.

Got the Cummings yanked out last night. All the forums I read said to drop the pan or disassemble the 5 and 6 valve train to get the motor out. Guess they didn't know you could just stretch the cowl a little and do some precision hackery to the frame motor mounts. 👌


After I gutted the dodge I threw together this engine stand for the motor out of scraps.

Anyone need some 2nd gen parts?

 

[glockman]

That engine stand is beef! Is that a vise grip ground clamp?

 

[Pile of parts]

Anyone need some 2nd gen parts?

Do you have a cowl or motor mounts?
Love the build!

 

[YROC FAB.]

Do you have a cowl or motor mounts?
Love the build!

Yes I do. Slightly used. . Make me a offer.

 

[YROC FAB.]

That engine stand is beef! Is that a vise grip ground clamp?

Yes it is, Its really convenient when you have to hold a small part to weld. I posted this in the What did you work on today thread years ago. Both my mig welders have metal tables on them that are grounded so you can simply drop the parts on and weld right on top of them. I had also wired in a couple 120volt receptacles in the front panel and a 220volt receptacle in the back. My plasma cutter used to live on top of the welder and it was convenient to plug the plasma into the welder.





My fren Cayden came over today and helped me clean up the shop. Waiting on transmission parts then on to gutting the crew cab.

 

[YROC FAB.]

I Went through the 205. I remember trying to put this one in a buddies blazer 10 years ago. Its been stored outside luckily upside down since then. It still had atf in it and looked great inside. I replaced both the output seals and the input seal and cleaned the magnet off inside it.

Im using 1410 u joints all around on this truck. Im using the single cab 1410 rear drive line for the 4 door so i installed a old new atlas 1410 yoke on the the rear of the 205. 32 spline 205 yokes are the same as atlas and stak fyi. I had a 1410 flange on the shelf so i machined the 205 original front flange pilot to fit into the 1410 flange. The bolt pattern was the same but both were threaded so i just drilled out the 1410 flange.








Spacer i had to get with the longer input shaft on the 205 to bolt it to a chevy nv4500 tail housing. I got this 4x4 nv4500 tail housing from a friend but it ended up being a dodge one so now im waiting on a cast iron gm one to show up now.

 

[I Lean]

205's use ATF inside, huh? I assumed they'd be gear oil. (but I've never owned one, so whatever)

 

[YROC FAB.]

205's use ATF inside, huh? I assumed they'd be gear oil. (but I've never owned one, so whatever)

If they came behind a auto then they ran atf JIC the seal leaked between the two. I douched it out while standing it up with the pto cover off with a can of brake clean. Ill be putting gear oil in this 205.