518 HP / 453 Torque @ 6000 on 93 octane. Engine was built in Feb., 2008. Never been installed in any vehicle, been on an engine stand with in my home since purchase. Engine includes the block, intake, carb, heads, air cleaner & v. covers, balancer, mech fuel pump, oil pan, plugs / wires / dist. cap, solid motor mounts, engine stand, etc., and all dyno.