SBC Block # 3970014, 4 Bolt main. Completely overhauled. All new inside and out. Bored 030. small dome pistons, reconditioned rods, summit cam, sum.K1106, 882 heads, 202 & 160. All new Berrings, scat crank, all balanced. Roller tip rockers, new 650 Edelbrock carburetor , aluminum intake, Complete engine on test stand, can hear run and see oil pressure.