355 Small block chevy, .030 over GM block, GM crank, GM rods with ARP bolts, GM 993 heads with 1.94/1.50 valves, KB Hypereutectic pistons, 9.5:1 compression, Comp Cams hydraulic cam 232/234 @ .050 .488 lift, Edelbrock Performer intake, Holley 750 carb.