Hi folks, I am new here but have grown up around several 30 series Case tractors. I have a 741 gasoline that grandpa bought new in 1966. Sometime in the late 70 s, while planting corn, the engine gave out. They had a 841 LP parts tractor, so they put the 284 ci LP engine in the 730 and put another 1000 hours on while burning gasoline through an LP engine before it was parked for starter issues in 1999. I understand that the LP engine runs higher compressions so the fuel pre-ignites and the engine "pings." My primary question is, is the difference in compression between an LP and a gasoline 284 engine all in the heads? If so, do you see any issues with me finding heads from a 284 gasoline engine and using them on an engine that was built for burning LP?