Hey guys how goes the debates. I have been thinking I am only getting 38 to 40 on the freeway doing 60mph, Can my engine not have enough compression cause no cylinder head will help or make more mpg if the engine is weak. my compression test data shows 150 to 155 on cylinders #1 dry 155, wet 160, #2 dry 150, wet 155, #3 dry 152
wet 162, #4 dry 155, wet 161... I bought the car with 26 OG miles on it, it sat for 20 years, the cylinders look good when I pulled the head. sorry the pics are too big to show...
compression was done with a hot engine, all plugs out, and throttle open.