Boyo, I kept the 292 out of my 63 3/4 truck with LP in mine, turboed. Then I started buying diesels. Many years ago (63 or 64) I drove an R 200 International tractor. I was a 3 axel but the rear axel was dead, except when you installed the belts. I never ran it with the belts installed. It was butane powered, single fuel set up. 501 inline 6, it ran good. I don't remember what kind of milage it got. We use an LP powered Chysler V8 (also single fuel) on a water pump at work. It runs 24/7 during the warm months. I don't recall how many hours it had on the last overhaul, a bunch. And it is clean at teardown. Make sure you have good seats and valves. I think you need to make sure the valves don't rotate. Good luck. Mike
