904 Cubic Inches Steve Schmidt Big Block Chevy engine 5.3 bore spread. Dyno sheet with 1940 HP all motor! 23 passes on rods rings and bearings with all new springs.( 0 runs) Engine has been refreshed once since new that had 88 passes.Check pics for engine parts. Our local track has closed and I don,t travel.Engine comes with stainless steel 3 step tek headers.Also comes with two piece Coan torque converter with extra cover and stator for any elevation.