Headers, Dougs, 1964-77 Chevrolet SB 1-5/8", Shorty

1964-94 GM Headers, (Chevy 265-400, 1-5/8", Mid-Length), by Doug’s Headers®

1.625-inch primary tubes, 3.0-inch collectors and steel mid-length construction.

Doug’s Headers® mid-length headers use 1.625-inch primary tubes and 3.0-inch collectors. The steel tubes meet 3/8-inch head flanges, and the pair includes header gaskets and mounting hardware. Choose metallic ceramic, high-temperature black or raw steel according to the selected option.

• Construction: steel mid-length headers; 16-gauge tubing and 3/8-inch head flanges. • Primary tube diameter: 1.625 inches; collector diameter: 3.0 inches. • Collector connection: 3-Bolt Flange; exhaust-port shape: Oval. • Finish options: metallic ceramic, high-temperature black, raw steel. • Supplied as a left/right pair with header gaskets and mounting bolts. • Fitment: 1977–81 Buick Century: 305 cu. in.; 1978–79 Buick Century: 350 cu. in.; 1978–80, 1982–87 Buick Regal: 305 cu. in.; 1978–80, 1983–84 Oldsmobile Cutlass Calais: 305 cu. in.; 1978–80, 1985–87 Oldsmobile Cutlass: 305 cu. in.; 1978–79 Oldsmobile Cutlass: 350 cu. in.; 1978–80 Oldsmobile Cutlass Salon: 305 cu. in.; 1978–80, 1983, 1985–87 Oldsmobile Cutlass Supreme: 305 cu. in.; 1977–81 Pontiac Firebird: 305 cu. in.; 1978–79 Pontiac Firebird: 350 cu. in.; 1978–80, 1983–87 Pontiac Grand Prix: 305 cu. in. Accepts most angle-plug cylinder heads; Air conditioning: use left-side bracket H7608; 1979-up short-compressor installations may retain the factory bracket; Factory-installed Chevrolet small-block engine required; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1970–72 Chevrolet Biscayne: 350, 400 cu. in.; 1964–67 Chevrolet Chevelle: 283, 327 cu. in.; 1968 Chevrolet Chevelle: 307 cu. in.; 1970–72 Chevrolet Chevelle: 307, 400 cu. in.; 1971–75 Chevrolet Bel Air: 350, 400 cu. in.; 1975–76 Chevrolet Caprice: 400 cu. in.; 1964–69 Chevrolet El Camino: 327 cu. in.; 1964–67 Chevrolet El Camino: 283 cu. in.; 1968–73 Chevrolet El Camino: 307 cu. in.; 1970–76 Chevrolet El Camino/Monte Carlo: 400 cu. in.; 1971–76 Chevrolet Impala: 400 cu. in.; 1971–73 Chevrolet Impala: 307 cu. in.; 1975–76 Chevrolet Laguna: 350, 400 cu. in.; 1976 Chevrolet Laguna: 305 cu. in.; 1973–76 Chevrolet Malibu: 400 cu. in.; 1973 Chevrolet Malibu: 307 cu. in. Accepts most angle-plug cylinder heads; Air conditioning requires left-side bracket H7608; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1970–77, 1981–84 Chevrolet Monte Carlo: 350 cu. in.; 1969–73 Chevrolet Nova: 307 cu. in. Accepts most angle-plug cylinder heads; Air conditioning requires left-side bracket H7608; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1968 Chevrolet Chevy II: 307, 327 cu. in. 1967–69 Camaro/1968–74 Nova: accepts stock suspension or Detroit Speed rack-steering subframes; 1967–69 Camaro/1968–74 Nova: factory Saginaw 800 steering box excluded; Accepts most angle-plug cylinder heads; Air conditioning requires left-side bracket H7608; Automatic transmission only; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1981 Chevrolet Bel Air: 305 cu. in. Accepts most angle-plug cylinder heads; Automatic transmission only; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1967–81 Chevrolet Camaro: 350 cu. in.; 1975–94 Chevrolet Caprice: 350 cu. in.; 1977–93 Chevrolet Caprice: 305 cu. in.; 1968–79, 1983–84 Chevrolet El Camino: 350 cu. in.; 1968–73 Chevrolet El Camino: 307 cu. in.; 1976–87 Chevrolet El Camino: 305 cu. in.; 1971–85, 1994 Chevrolet Impala: 350 cu. in.; 1977–85 Chevrolet Impala: 305 cu. in.; 1973–83 Chevrolet Malibu: 350 cu. in.; 1976–83 Chevrolet Malibu: 305 cu. in.; 1976–88 Chevrolet Monte Carlo: 305 cu. in. Accepts most angle-plug cylinder heads; Air conditioning: use left-side bracket H7608; 1979-up short-compressor installations may retain the factory bracket; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1967–69 Chevrolet Camaro: 327 cu. in. 1967–69 Camaro with air conditioning excluded; 1967–69 Camaro/1968–74 Nova: accepts stock suspension or Detroit Speed rack-steering subframes; 1967–69 Camaro/1968–74 Nova: factory Saginaw 800 steering box excluded; Accepts most angle-plug cylinder heads; Air conditioning requires left-side bracket H7608; Automatic transmission only; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1976–81 Chevrolet Camaro: 305 cu. in. Air conditioning: use left-side bracket H7608; 1979-up short-compressor installations may retain the factory bracket; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1980–81 Chevrolet Camaro: 267 cu. in.; 1980–82 Chevrolet Caprice/Impala: 267 cu. in.; 1994 Chevrolet Caprice: 265 cu. in.; 1979–82 Chevrolet El Camino/Malibu/Monte Carlo: 267 cu. in. Accepts most angle-plug cylinder heads; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1983–84 Chevrolet El Camino: 350 cu. in. Accepts most angle-plug cylinder heads; Air conditioning requires left-side bracket H7608. • Fitment: 1964–67 Chevrolet Malibu: 283, 327 cu. in. Accepts most angle-plug cylinder heads; Air conditioning requires left-side bracket H7608; Automatic transmission only; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1969–79 Chevrolet Nova: 350 cu. in.; 1976–79 Chevrolet Nova: 305 cu. in. 1967–69 Camaro/1968–74 Nova: accepts stock suspension or Detroit Speed rack-steering subframes; 1967–69 Camaro/1968–74 Nova: factory Saginaw 800 steering box excluded; Accepts most angle-plug cylinder heads; Air conditioning: use left-side bracket H7608; 1979-up short-compressor installations may retain the factory bracket; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1980, 1982–83 Oldsmobile Cutlass Cruiser: 305 cu. in.; 1983–86 Pontiac Bonneville: 305 cu. in.; 1980–81 Pontiac Catalina: 305 cu. in. Accepts most angle-plug cylinder heads; Factory-installed Chevrolet small-block engine required; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1978 Oldsmobile Cutlass Supreme: 350 cu. in. Accepts most angle-plug cylinder heads; Air conditioning requires left-side bracket H7608; Factory-installed Chevrolet small-block engine required; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Fitment: 1967–81 Pontiac Firebird. 1967–69 Firebird with air conditioning excluded; 1967–69 Firebird: accepts stock suspension or Detroit Speed rack-steering subframes; 1967–69 Firebird: factory Saginaw 800 steering box excluded; Accepts most angle-plug cylinder heads; Air conditioning: use left-side bracket H7608; 1979-up short-compressor installations may retain the factory bracket; Chevrolet 265–400 small-block engine conversion; Modify or remove the steering-column lock linkage where fitted; Requires open-style motor mounts rather than shell-type mounts. • Accepts D-port/ZZ4 heads; excludes GM Fast Burn 19300955 and SP350, SP383 or ZZ6 engines.