340 Duster running hot

havent hammered on it yet. trying to put some miles on the motor before i do hammer on it. just drove it around the block a couple times and it heated. i dont think we are running lean. being only 17 i havent been around these cars as much so im not positive. how could i tell? also with that compression what fuel should i run?


With that compression you will need (not optional) super pump gas just to cruse around. If you plan to race or get on it you will need a mix of something like 1/2 tank of super and 1/2 tank of 110 octane race fuel.