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Hey guys I was wondering if I can use 454 down pipes on my m1028? I read that you can but I thought I would ask. I just want the front half of the exhaust to be smooth bends and not that rinkle bend stuff

I have a m1028 1986 th400/208/456gears with the stock 235/85/r16 tire size. According to rpm calculators at 3000 RPM I should be going a little over 60 miles an hour. I’ve also been told that there are individuals doing 65 miles an hour at 3000 rpm i’m doing 35 miles an hour at 2000 RPM i’ve...

Hey guys, I recently installed a gearvenders over drive into my truck stock 456 gears and 235/85/r16 tires I love the set up my only issue is I found a post on here that said that with the overdrive turned on but he was doing 45 miles an hour at 1800 RPM or something like that and 75 miles an...

Hey guys I Took my yolk off my rear axle because I was putting in a overdrive unit and I wanted to replace the pinion seal on the axle while the driveshaft was out and I marked the bolt with a paint pen and I used some carb cleaner and it came off of the splines but it was still on the bolt, but...

I’m going to be swapping in a sm465 in place of my th400 and I’m wondering, do I need to shorten the front drive a shaft at all? do I need to relocate the transmission crossmember? i still have the 24v starter do I need to modify the hydraulic bell housing to have the 24v starter fit? I e been...

Hey guys I rebuilt gen1 for the fourth time in a row and finally the light went out after turning the key and the tach works again but the resting voltage of the truck is 34 V when I first stop the truck when it’s running today at measured 40.8 V and the voltage gauge is in the green and the...

Hey guys, I have a weird issue I have a vdo 4K tach in my truck that stopped working when you turn the key the needle moves up to zero and when you turn on the engine the needle goes up to 200 rpm then back down to zero but never holds at 200 RPM just goes up and goes back down when you turn the...

Hey guys I put a vdo 4K tach in my truck about half a year ago and all the sudden it stopped working you can see it’s getting power because the needle rises up to zero but when the truck is running it doesn’t read anything and I didn’t mess with the switches on the back to calibrate it I didn’t...

Hey guys, i’m trying to find a receiver for my m1028 and I don’t wanna drill new holes and I don’t wanna cut anything apart to make it fit I also have a spare tire under the bed and I’m worried about the shackle mounts getting in the way what are my options? Every form I’ve read people say they...

Hey guys, I’m looking for a 2 1/16 size tach gauge and I found a isspro gauge but it saids “ sensor required“. Has anybody not used the sensor and wired one up to the alternator? Or does anybody know of any 2 1/16 diesel gauges that wire up to the alternator I found 4000 RPM gauges that say they...

Hey guys, I have a m1028 retired forest service truck and I noticed that the driver side is leaning to one side I measured from front to back and it ranges from a half inch all the way up to 1 inch lower than the passenger side and the fuel tank is almost completely empty I’m not sure if this is...

Hey guys, I have a m1028 And when I start the truck there is this ticking sound that I can hear both in and outside the truck but I can hear it more from inside the cab on the passenger side roughly coming from The heater box area, I stand outside the truck I can’t really hear it over the engine...

Hey guys, I have a 1986 m1028 and I’ve had trouble starting it every day since I got it and we have replaced the lift pump and the injectors and glow plugs trying to solve the issue, but I just realized that the valley of the engine is wet, so I sprayed it down with carb cleaner and I checked...

Hey guys, we just replace the injectors in my non-turbo 6.2 86 m1026 and when I accelerate hard there’s this whistle even when I let off the throttle until I slow down, almost like a turbo whistle, it’s pretty loud. it’s not the fan belts they’re all tight and none of the injectors are leaking...

Hi, I have gotten a lot of use out of the CUCV Parts and Illustration Catalog that is posted on this site. It is invaluable for finding part numbers for things that are not the same on the civilian equivalent trucks and seeing how these things are supposed to go together. While I was looking...

Hello i’ve been reading up on converting my truck to a manual it’s a 1986 m1028 and I want to put a sm465 in it but I need to re-gear the differential if I’m going to go on the freeway at 65-70 miles an hour where will the rpm be with 4:10 gears and LT235/85R16??? thanks guys!

Hello I was just wondering if anybody knew why my m1028 blows white smoke a little bit even at idle it’s smokes a little bit, even when you get on the gas at times, The smoke isn’t bad but it’s noticeable. I thought it was water vapor at first when it first starts. I have heard it can be bad...

Hello I have a 1986 M1028 with the original 24 V system and when I got it the volt gauge doesn’t work. I checked the fuse box, the fuse was OK. I’m wondering if it’s the resistor on the gauge but I’m not sure how to test it or how many ohms to test it for. PS if the gauge isn’t working does that...

On the back of the engine these two large gauge wires that come from each detection out of the harness and come to a connector with a capacitor............what is it, what’s supposed to be there ,and what’s it for. Thanks for the help.