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19trax95's 1986 CUCV M1028A1

16069 Views 358 Replies 24 Participants Last post by  19trax95
So I have been looking for a decent square body for some time now. Didn't really have my eyes on anything in particular, but the frame and body needed to be in as good of shape as I could find.

Last week I came across this beast on marketplace up in Massachusetts. It's a 1986 Chevy M1031. Which is the military CUCV service truck.

It is I'm great shape. Frame is rock solid, and the cab has very, very little rust. It is also mechanically sound. A couple little leaks, but that's to be expected.

It has the 6.2 diesel, th400 trans, np205 t case, king pin Dana 60 front axle with a limited slip, 14 BFF rear with locker, and 4.56 gears. The service body is all aluminum. It used to have a PTO driven generator and air compressor, but those have since been removed. The PTO is still on the t case though.

My plans are to keep it fairly original, but add a few creature comforts to suit me better.
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I really wanted the retro bright lights. But they are $300+ so I got these for now.
I really wanted the retro bright lights. But they are $300+ so I got these for now. did I....but a little too pricey, and I found out the lenses were plastic.....not that it really mattered, but the Hellas are glass.
Welp, one PA winter is already taking its toll. The little spot of rust that was on the front fender got bigger and the bottom lip of the rockers has some starting.

The fender I knew needed to be fixed anyway, so I'm not worried about that. The rockers looks like just surface rust due to some paint that chipped off. It doesn't appear to be deeper than that since a little scuff with Scotch Brite and it was to clean metal.

So I'll add that to the spring project list lol.
Haven't driven the truck in a little while. Fired right up tonight. Putting it to work tomorrow towing my trailer through some potentially muddy terrain.

Not much weight, but I figure this truck is the best of the 3 to take for potential mud. It's the lightest and has the locker in the rear and posi up front, plus the tires obviously lol.

Just need to help my father get some lacrosse nets delivered from the township building to the fields for the teams he's coaching starting soon. The one field they are working on, which is where the mud may come into play. I'm going early in the morning to try and catch it while the ground is still frozen.

I've been itching to start working on this truck again. But the weather hasn't cooperated whenever I find time to work on it.
Got everything loaded up this morning and delivered the nets to the various fields. Luckily the ground wasn't super soft at most spots so no damage was done to the fields.
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Diesel money...

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Yeah $5.19 a gallon lol. But it was for my dad's team he's coaching so it was a freebie
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Well I thought I was done with the plow for the year. But mother nature had other plans. Got a quick storm today. Was 70⁰ last weekend and now this lol. Hopefully this'll be the last storm of the season. I'm ready to start working on the trucks again.
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Same here...woke up to rain & 52° at 3pm wind is howling, it's 31° and the ground is WHITE!

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Been in the 80,s here and then 27 this morning and going to freeze again tonight. Come on July and August.
Got a few things I want to do this weekend on truck. I actually already started.

I got two new 1000cca batteries for it. I also got some new cable to replace some that could use it.

Also want to do some wiring cleanup for the plow wiring and maybe keep going on the radio install if I have time.
Well batteries didn't happen over the weekend. Weather went to shit.

But I was able to get the batteries swapped over tonight. Still need to clean up the cables and wiring, but the new batteries are in. Can tell a difference in cranking speed. The old ones weren't bad by any means. But when I got 2 brand new Deka 1000cca batteries, I figured I'd put them in and throw the old 2 on a tender.

Also sort of got my radio working. It's really just a temporary rig job for now until I can get time to wire it in properly and mount the speakers the right way. But at least I got tunes now and don't need to keep using my Bluetooth speaker lol.
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I got the start to my experiment today.

I obtained a 55 gallon drum of diesel with some gas mixed in. Had a driver top off their tank with gas, so it needed to be drained. We need to pay to dispose of it, so I let it settle and then sucked the top 50 gallons out of the drum and pumped into a fresh drum then topped the rest off with diesel.

My plan is to mix that with filtered used engine oil. My initial plan is to try a 70/30 mix fuel and oil. May increase the oil mix if it works good. I have about 30 gallons of waste oil at home and a virtually unlimited supply at work.

I need to setup a filter system for the oil. My initial thought was doing small batches and then mixing it thoroughly before dumping it in the tank, then filtering it one last time before it goes in the tank.

I will be tracking fuel milage and fuel filter life, as well as how the engine runs and the power output.

My tank is full at the moment so it'll take a little bit before I get to test it.
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Which truck will you be doing the testing in this one? I would be a little scared to put in in the HC honestly
Nope just the 86. I wouldn't even consider trying anything like that in a common rail motor. IDI motors are the only ones I'd even think of trying it in.
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I drove the truck most of last week so I'll begin my fuel experiment this weekend most likely. I want to try and obtain an electric lift pump for the motor and change to a spin on filter as well.

I wanted to do a fass setup, but I can't justify the $700 for one that'll be WAY too much pump for this motor. So I'll likely do a 6.5 pump. They are cheap and work fine.
Had a little free time tonight before dark and was able to get my front dash speakers mounted and I swapped my cluster lights to leds.

Was able to get the dash pad installed but need to get a few new screws. Since the dash pad was off for the last couple months I have misplaced a couple of the screws. I know I was missing a couple to start with, but I lost some more for sure lol.

So now I need to run my wire for the rear speakers, make mounts for the rear speakers, and then clean up wiring. Hopefully this weekend I'll be able to get it done.

I also found why my 4wd light doesn't work. The wiring from the switch on the transfer case rubbed on the frame and corroded the one wire. So I'll fix that wire and secure it better and that should fix my 4wd light.

I also plan to mix my first batch of fuel this weekend.
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