IH Farmall 656 gas/ IH 240 Utility/ 2, Super C Farmalls/ 2, Farmall A's/ Farmall BN/McCormick-Deering OS-6/McCormick-Deering O-4/ '36 Farmall F-12/ 480 Case hoe. '65 Ford 2000 3 cyl., 4 spd. w/3 spd Aux. Trans
Compression ratio is around 4:1, due to, they were designed to run on distillate, and gasoline, known as an all fuel engine. If you've done a compression test, and it's around 55-60 psi, you're in the ball park.