[unclebilly]

Growing up, all of my dad’s trucks ran on propane. He always had a dual fuel conversion but never ran gas.

On a 78 dodge that was passed on to me, it had a 400 with a Holley carb and a propane carb on top and lots of miles. The cylinder walls in it were so tapered that I had to start it on gas and then switch to propane as it wouldn’t draw enough vacuum on a cold start to trip the solenoid to turn on the propane.

He had several ex government 3/4 ton 4x4 suburbans too, all converted to propane.

In the summers in the 80s, it would get down to $.08/L. I did burn clean but there was cylinder wear as mentioned with the dodge above, I eventually put a 440 in that truck out of an early 70s New Yorker.