383 small block Chevy motor, edelbrock performer rpm heads 70cc chamber, edelbrock rpm air gap intake, comp cam 487 490 lift, comp cam magnum 1.6 ratio roller rockers, 5.7 rod with arp bolts, 400 cast crank externally balanced, Maule 2 valve relief flat top pistons, 9.97 to 1 compression, motor has about 4000 miles on it just went a different route, have video of it running