Dodge '87 W350 Cab & Chassis Dually
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mattressking
10 digits to freedom
- Thread starter
- #23
Just hiding in the dark corners of mud.....minimal progress - just torquing things and attaching lines as I have time.
Fuel tank, lines, exhaust, clutch hydraulics and front end….along with hanging trans and tcase once adapter arrives.
Learned that the pre-88 wiper motor is larger….time to run to the junkyard for a post 88 motor.
Looks amazing man! Put me top of list when you get bored.
We can road trip it together down here!
Looking good!
I found my old swap thread, might have some useful info for you:
www.ramchargercentral.com
I found my old swap thread, might have some useful info for you:
1984 W350 crew Cab cummins 6bt conversion
mattressking
10 digits to freedom
- Thread starter
- #26
Wish I was better with updates - lots of little projects done but not many photos.
1. Driveline is now in and mounted - all fits like factory. I ultimately used the trans crossmember from a 89-93 ram and the 6-7” 4x4 crossmember support - the 4spd and 5spd prior to 89 didn’t match so i went all late model. Easy install.
2. First start went well, instantly built 65-70psi oil pressure at cold start idle (30deg or so).
3. Cooling system is connected with brand new brass radiator (wooo!)
4. More miscellaneous bits are rolling in to install the air cleaner and 4” exhaust (exhaust is massive and hilarious compared to any normal passenger car).
5. Fresh battery and new tray all went in nicely.
6. Attempted my first zinc plating for the core support bushings….I found the factory hardware to be better so I found clean body mount bushing sleeves, had them spun down on a lathe and replated. All the core support bushings went together great.
7. New battery cables fit great as always, battery cables USA is way too good to work with. New denso boot also of course.
1. Driveline is now in and mounted - all fits like factory. I ultimately used the trans crossmember from a 89-93 ram and the 6-7” 4x4 crossmember support - the 4spd and 5spd prior to 89 didn’t match so i went all late model. Easy install.
2. First start went well, instantly built 65-70psi oil pressure at cold start idle (30deg or so).
3. Cooling system is connected with brand new brass radiator (wooo!)
4. More miscellaneous bits are rolling in to install the air cleaner and 4” exhaust (exhaust is massive and hilarious compared to any normal passenger car).
5. Fresh battery and new tray all went in nicely.
6. Attempted my first zinc plating for the core support bushings….I found the factory hardware to be better so I found clean body mount bushing sleeves, had them spun down on a lathe and replated. All the core support bushings went together great.
7. New battery cables fit great as always, battery cables USA is way too good to work with. New denso boot also of course.
Last edited:
mattressking
10 digits to freedom
- Thread starter
- #27
What else, new seals on tcase adapter, made an adapter harness for the fuel tank sender. I swapped to thr late model diesel tank which uses a 5 pin connector, so I used my generic terminal kit (Toyota folks will see a similarity 
).
Also found that the early wiper is a tight fit - so late model wiper motor from the junkyard and a quick cleaning did the trick.
Can’t reiterate cleaning. So. Much. Cleaning.
Lastly first start. Downpipe is dumping into the engine bay on cold start but my goodness. This is exactly what I needed to hear.
).Also found that the early wiper is a tight fit - so late model wiper motor from the junkyard and a quick cleaning did the trick.
Can’t reiterate cleaning. So. Much. Cleaning.
Lastly first start. Downpipe is dumping into the engine bay on cold start but my goodness. This is exactly what I needed to hear.
mattressking
10 digits to freedom
- Thread starter
- #28
Nearly complete looking now….intercooler pipe, wiring and downpipe v-band welding are really the last items to wrap up under the hood….aside from all the splash shields.
mattressking
10 digits to freedom
- Thread starter
- #29
Going oh so slow right now….piping is complete, hood liner and transfer case shifter is all done now. Interior is all assembled now…until spring when I pull the glass for a new dash and fresh wiring harness that I pulled from the junkyard.
89-91 non-intercooled harness arrived, hoping I can make some small mods and drop it in. Then it’ll just be fluids. exhaust mounting and finish fuel inlet once parts arrive.
Intercooler charge pipe worked out great, long 2.5” 90 only needed chopped down a couple inches, added a bead roll and dropped right in with some new silicone clamps to the HE351.
Maybe I’ll drive it this winter
89-91 non-intercooled harness arrived, hoping I can make some small mods and drop it in. Then it’ll just be fluids. exhaust mounting and finish fuel inlet once parts arrive.
Intercooler charge pipe worked out great, long 2.5” 90 only needed chopped down a couple inches, added a bead roll and dropped right in with some new silicone clamps to the HE351.
Maybe I’ll drive it this winter
- Joined
- Jul 22, 2012
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are those 100 series hose clamps on the rad hoses, awesome lol
mattressking
10 digits to freedom
- Thread starter
- #31
Haha no, just standard tension clamps. Light color is oem Chrysler but the rest are German from bel-metric.
I did use Toyota coolant hose for heater lines
mattressking
10 digits to freedom
- Thread starter
- #32
Been a while since an update. Only working on wiring and lots of little things that go unseen. Majority of it was merging the ‘93 motor to an 87 chassis using a 90 harness.
Goal was to:
1. Eliminate any need for ecu for electricals (91-93)
2. Merge existing body harness at firewall
3. Use factory wiring harness(es) and terminal pins.
4. Retain factory cluster with speedo cable
5. Utilize KSB and factory grid heater system since they are standalone from the rest of the truck wiring.
So ultimately I took the body harness plug and repinned the 50 pin firewall plug to match the cab harness. Then made a custom harness to match the transfer case and trans plugs into the engine harness. The engine harness was minimized to only include necessary sensors and retains KSB with new genuine Cummins harness. I did learn that into the mid 90s the engine harness plugs were the same on gas and diesel so pulling misc wiring and terminals helped with recreating some wiring. All in all the only item not functioning with the truck now is the ammeter which I’m debating my path forward….add wiring to recreate ammeter functionality or find a way to incorporate late model voltmeter (starting in ‘90).
What else….upgrade to late model starter relay, late model wiper motor and found a very neat item at the junkyard…..
92-93 Rams use Nippon Denso blower motors….so of course I snagged that, cleaned and installed.
Aside from that, cerakoted the downpipe, started hanging the 4” exhaust and wired in all the lighting and added 6 watermelons on the bed.
Next will be the lift, finish exhaust and register the truck!
Goal was to:
1. Eliminate any need for ecu for electricals (91-93)
2. Merge existing body harness at firewall
3. Use factory wiring harness(es) and terminal pins.
4. Retain factory cluster with speedo cable
5. Utilize KSB and factory grid heater system since they are standalone from the rest of the truck wiring.
So ultimately I took the body harness plug and repinned the 50 pin firewall plug to match the cab harness. Then made a custom harness to match the transfer case and trans plugs into the engine harness. The engine harness was minimized to only include necessary sensors and retains KSB with new genuine Cummins harness. I did learn that into the mid 90s the engine harness plugs were the same on gas and diesel so pulling misc wiring and terminals helped with recreating some wiring. All in all the only item not functioning with the truck now is the ammeter which I’m debating my path forward….add wiring to recreate ammeter functionality or find a way to incorporate late model voltmeter (starting in ‘90).
What else….upgrade to late model starter relay, late model wiper motor and found a very neat item at the junkyard…..
92-93 Rams use Nippon Denso blower motors….so of course I snagged that, cleaned and installed.
Aside from that, cerakoted the downpipe, started hanging the 4” exhaust and wired in all the lighting and added 6 watermelons on the bed.
Next will be the lift, finish exhaust and register the truck!
