Distributors are the perfect upgrade for non-computer controlled engines. 1 Fully CNC machined with black EDP housing. 2 Adjustable vacuum advance canister to improve economy. 3 Premium caps with brass terminals. 4 A low-saturation ignition module. 5 High output coil which produces 48,000-volt spark through 7,000 RPM. 6 4340 Chromoly steel bottom gear for use with cast and steel billet cams. 7 True spark alignment for instantaneous response at high RPM. It is a new HEI distributor for small block/big block Chevys. 1958 Chevrolet Del Ray. 1967 Chevrolet K20 Panel. 1962 Chevrolet P10 Series. Applications include 283, 305, 307, 327, 350, and 400 small blocks, and 396, 427, and 454 big blocks. Can fit for C10, C10 Suburban. C1500, C1500 Suburban, C20, C20 Suburban, C2500. C30, C3500, Caprice, Corvette, El Camino, G10, G20, G30. Impala, K10, K10 Suburban, K20, K30, K2500, K5 Blazer many models. Can fit for C2500, C2500 Suburban, C35, C3500. Caballero, G1500, G2500, G3500, G35, Jimmy, K15, K15 Suburban. K1500, K25, K2500, K35, K3500, R3500, Sprint, V1500, V2500, V3500, Yukon many models. Can fit for Cutlass Cruiser, Cutlass, Omega, Starfire many models. 681models fit for 7.4L 454Cu. V8 GAS OHV Naturally Aspirated. 318models fit for 6.6L 400Cu. 1242 models fit for 5.7L 350Cu. 16 models fit for 5.7L 350Cu. V8 DIESEL OHV Naturally Aspirated. 30 models fit for 5.7L 350Cu. V8 CNG OHV Naturally Aspirated. 633 models fit for 5.0L 305Cu. 20 models fit for 4.4L 267Cu.