Originally Posted By Cab_Burge
OP, don't waste your money or energy on the conversion twocents
I had one of my old car hauler one ton trucks converted back in the mid 1970s when the first gas crisis was occurring for the increased fuel storage, 85 gallon tank. It had a 318 industrial poly motor in it and burnt the valves up real quickly puke Major expense on installing harden seat and new valves work that truck got 8.5 MPG on gas and 7.5 MPG on propane shruggy
I later bought a M1500 I.H chassis Class A 26 ft. motorhome that was set up on propane only, it sucked on POWER and MILEAGE down I removed the system, converted it back to gasoline and never looked back and I never regretted it work up
You are spot on Cab. I worked for a shop doing propane/Cng conversions for the county short busses. Lots and lots of valve jobs were done on those rigs. I chalked it up to low lubricty of the fuel/ intake charge. But what do I know?

1968 Bronze Metalic Road Runner
!967 Malibu Wagon Original 4sd w/air
2001 Dodge Ram 4wd
1985 GMC K1500 4in lift
1993 Honda Civic W 350k Beater
2003 Honda VTX 1800 Bagger