440 block 4.38x3.91 stroke 12.8 to 1 comp. ratio,B1-BS heads M.W. port, tunnel ram with two 750 D.P, Crane solid roller cam 273 @ .050 721.8 HP @7000 RPM and 615.4 ft. lbs.@ 5400 RPM. My 518 CI low deck pump gas motor, 4.375 bore, 4.300 stroke, 10.29 to 1 comp. ratio. Eddy RPM 440 size cnc standard size port, six pak intake & carbs. 718 hp at 5800 rpm, 744 ft. lbs at 4500 rpm. This motor with a 2.50 stroke crank, 9.25 to 1 comp. ratio and ported 906 heads made 612 hp at 5600 rpm with 644 ft. lbs at 4000 rpm. It seems on the pump gas motors I make the lower comp. ratio motors make more torque than HP. The N/A higher comp. ratio race motors on race gas make more HP than torque