A friend of mine had an IHC 1 ton 4X4 with a 500+ ci IHC gas V8 engine that came out of an irrigation pump? We rebuilt it. It had a governed 2bbl we replaced with 500 Holly 2 bbl after a little machine work on the intake. I remember they used some good cast iron because there was almost no ridge. I cost a lot to have rebuilt but OMG what to torque monster. Not much horsepower but if you had traction I think that thing would pull a crooked road straight. Not a good choice to drive much, it never passed a gas station, 2 to 4 mpg. We would joke you had to shut it off to fill it up or the pump was too slow. You could have a fully loaded 3 axel stock trailer and it pulled it like there was nothing back there. If course, still had the typical bad brakes of that era so you have to be careful cause you were not going to stop very fast.
Thanks, that sparked a good memory
Rod