72 J heads 1.88 intakes milled .040 to 65 cc chambers, Ferrea stainless exhaust valves, 71 340 stock intake and 72 340 TQ, 9.0 compression, custom Racer Brown solid lifter cam, 72 340 electronic distributor, double roller timing chain, a windage tray, balanced, decks equalized, bored and honed with torque plates, Speed Pro file to fit rings.