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Yes, it was running when I pulled it out of a... nice and complete '77 M886 !! (I bought the whole thing for less than what that motor costs, here.)
Ohh well, yes and no... I forgot that at some point I had swapped IP tops with another (HMMWV)motor going for a 12V application.
I don't think so.
Today was a very productive day. I removed the oil pan , oil pump and rear main bearing cap. Then I removed the lousy no good rear main seal. I did not think that a 1987 engine had the rope rear main seal. Back 30+ years ago when I worked at the GM shop we replace hundreds of rope seals on S10 2.8 v6 engines as a recall. We put the rubber seals in to replace the leaking rope seals. Oh well at this point it is all going to be uphill again. I will begin cleaning and painting all the parts and reassembly next week. Thank you for looking. The transmission is still out being resealed and I decided to send the alternators to the shop and the starter. Start all fresh. This engine ran perfect even with the head gasket leaking.
The military crew that painted the 383 green CARC on this M1009 must have been on something. Every part of the truck has green paint on it the engine block, oil pan, axles , transmission pan and the top of the transmission. I don't know how they paint. But it is almost like they load a car wash up with paint and then drive thru. And the paint that was on the body had no adhesion what so ever and the paint that is on the underside you can hardly sand off. The inside of this engine is spotless. I can hardly remember taking apart another engine apart that was this clean inside. Thanks for looking. Now is the time of year to get out and start working on your projects.
I cleaned and sanded a few parts. I painted them today and began my body work on the right rocker. I will start posting them pictures with my driveline progress. 
I cut the rusty area out of the right rocker panel and acid washed it and sprayed Rustoleum Rust reformer inside the rocker. I am not a body man. I can get by with my repairs but I am not the type that does show room quality work. But I get by and it looks good when I am done. I have a new rocker panel and will only braze the piece in that I need. It will last a while. This is my low budget project. I am spending my budget on the drive line everything else I found laying around the shop. The rocker I used the inner piece on another truck that was rusted inside the sill plate and the outer rocker was good. Thanks for looking and have a nice day.
After taking some time away and going on vacation I am back at work on my engine project for the Mule. I installed a new rear main seal , water pump , front main seal , fuel pump and am buttoning up the bottom end. I chose the wood blocks over the engine stand. t makes it easier for me to work on sitting on my chair and I don't have the hassle of turning the heavy engine over in the engine stand. I took the damper to the engine shop last week and the man said put it back on he saw no deterioration of the rubber. I sanded and wire brushed every part of the engine. I washed every nut and bolt in the parts washer 1 piece at a time and replaced every gasket on the engine. I used Permatex the right stuff and Felpro gaskets. I wanted something different so I found a can of blue paint and painted the motor mount brackets blue. Everything is going well. Tomorrow when some strong helpers come I will put it right side up and complete the upper end. I bought a GM block heater and will be installing that while I have the engine inverted. Everything is going well we are doing the body work at the same time as the overhaul. But I did not want to go wild on that yet because of the dust and dirt. Thank you for looking and have a nice day.
I did a lot of work tonight. I installed a new GM block heater and a new fuel lift pump. We flipped it over and put the heads back on and am moving in the right direction. Last night I was doing some right rocker panel work and cleaning more bolts and nuts in the parts washer. It is time consuming but it looks nice when I am done with it. I want to repaint the heads after I get the rocker covers installed. They did a really nice job cooking the heads when I sent them out to have them redone at the machine shop. The raw casting does get a light rust coat on it pretty quickly in the humidity. Thank you for looking and have a nice day.