# Edelbrock Polished B/B Chev Rect Port RPM Air-Gap Manifold Edelbrock part #75621 RPM Air-Gap 2-R intake manifold is designed for street 396-502 c.i.d. Chevrolet V8's with high-performance rectangular-port heads. The open air space separates the runners from the hot engine oil, and as a result, the air/fuel mixture stays cooler for a denser charge and more power. This intake manifold is a dual-plane, high-rise design with a 180 degree firing order to produce incredible top-end horsepower while retaining good throttle response. The larger plenum and runners match the free-flowing exhaust, high-lift cams and other modifications of a high output engine. They are intended for high-performance's street or competition engines that run up to 6500 rpm. Includes rear water outlets, two distributor clamp locations and nitrous bosses. Accepts all late model alternator and A/C brackets for the street. For square-bore carbs only. No provision for exhaust heated chokes and no exhaust crossover. This manifold offers a polished finish for a brilliant shine and classic look. - Larger Plenum and Runners Maximizes Other Upgrades This Part Fits: Year Make Model Submodel 1973-1974 Avanti II Base 1965-1975 Chevrolet Bel Air Base 1965-1972 Chevrolet Biscayne Base 1973-1974 Chevrolet Blazer Base 1969-1972 Chevrolet Brookwood Base 1978-1980 Chevrolet C10 Big Ten 1975-1980 Chevrolet C10 Cheyenne 1975-1980 Chevrolet C10 Custom Deluxe 1975-1980 Chevrolet C10 Scottsdale 1975-1980 Chevrolet C10 Silverado 1968-1974 Chevrolet C10 Pickup Base 1968-1974 Chevrolet C10 Suburban Base 1975-1980 Chevrolet C10 Suburban Custom Deluxe 1975-1980 Chevrolet C10 Suburban Scottsdale 1975-1980 Chevrolet C10 Suburban Silverado 1990 Chevrolet C1500 454 SS 1990 Chevrolet C1500 Cheyenne 1990 Chevrolet C1500 Scottsdale 1990 Chevrolet C1500 Silverado 1990 Chevrolet C1500 WT 1975-1981 Chevrolet C20 Cheyenne 1981-1986 Chevrolet C20 Custom 1975-1980 Chevrolet C20 Custom Deluxe 1981 Chevrolet C20 Deluxe 1975-1986 Chevrolet C20 Scottsdale 1975-1986 Chevrolet C20 Silverado 1968-1974 Chevrolet C20 Pickup Base 1968-1974 Chevrolet C20 Suburban Base 1981-1986 Chevrolet C20 Suburban Custom 1975-1980 Chevrolet C20 Suburban Custom Deluxe 1981 Chevrolet C20 Suburban Deluxe 1975-1980,1982,1984-1986 Chevrolet C20 Suburban Scottsdale 1975-1977,1979-1980,1982-1986 Chevrolet C20 Suburban Silverado 1975-1981 Chevrolet C30 Cheyenne 1981-1986 Chevrolet C30 Custom 1975-1980 Chevrolet C30 Custom Deluxe 1981 Chevrolet C30 Deluxe 1975-1986 Chevrolet C30 Scottsdale 1975-1986 Chevrolet C30 Silverado 1968-1974 Chevrolet C30 Pickup Base 1988-1990 Chevrolet C3500 Cheyenne 1988-1990 Chevrolet C3500 Scottsdale 1988-1990 Chevrolet C3500 Silverado 1967,1969,1971-1972 Chevrolet Camaro Base 1967,1969 Chevrolet Camaro RS 1967-1972 Chevrolet Camaro SS 1972 Chevrolet Camaro Z28 1966-1972 Chevrolet Caprice Base 1973-1976 Chevrolet Caprice Classic 1976 Chevrolet Caprice Classic Estate 1976 Chevrolet Caprice Classic Landau 1975-1976 Chevrolet Caprice Classic Sport 1973-1974 Chevrolet Caprice Estate 1975 Chevrolet Caprice Estate Wagon 1965-1966,1968 Chevrolet Chevelle 300 1967-1969 Chevrolet Chevelle 300 Deluxe 1970-1972 Chevrolet Chevelle Base 1967-1972 Chevrolet Chevelle Concours 1969-1972 Chevrolet Chevelle Concours Estate 1973 Chevrolet Chevelle Deluxe 1969-1972 Chevrolet Chevelle Greenbrier 1973 Chevrolet Chevelle Laguna 1973 Chevrolet Chevelle Laguna Estate 1974-1975 Chevrolet Chevelle Laguna Type S-3 1965-1974 Chevrolet Chevelle Malibu 1974-1975 Chevrolet Chevelle Malibu Classic 1974 Chevrolet Chevelle Malibu Classic Estate 1973 Chevrolet Chevelle Malibu Estate 1965 Chevrolet Chevelle Malibu Super Sport 1968-1972 Chevrolet Chevelle Nomad 1971-1972 Chevrolet Chevelle SS 1967-1970 Chevrolet Chevelle SS 396 1966 Chevrolet Chevelle Super Sport 396 1968 Chevrolet Chevy II Nova 1965-1974 Chevrolet Corvette Base 1966-1975 Chevrolet El Camino Base 1968-1974 Chevrolet El Camino Custom 1968-1974 Chevrolet El Camino SS 1969-1970 Chevrolet Estate Base 1973-1974 Chevrolet G10 Van Base 1976 Chevrolet G20 Beauville 1976 Chevrolet G20 Chevy Van 1973-1974 Chevrolet G20 Van Base 1973-1974 Chevrolet G20 Van Sportvan 1975-1976,1988-1990 Chevrolet G30 Beauville 1975-1976,1988-1990 Chevrolet G30 Chevy Van 1975-1976,1988-1990 Chevrolet G30 Hi-Cube 1988-1990 Chevrolet G30 Sportvan 1973-1974 Chevrolet G30 Van Base 1965-1976 Chevrolet Impala Base 1975-1976 Chevrolet Impala Custom 1976 Chevrolet Impala Custom Landau 1976 Chevrolet Impala S 1975-1976 Chevrolet Impala Sport 1965-1967 Chevrolet Impala SS 1976,1979-1980 Chevrolet K10 Cheyenne 1976,1979-1980 Chevrolet K10 Custom Deluxe 1976,1979-1980 Chevrolet K10 Scottsdale 1976,1979-1980 Chevrolet K10 Silverado 1968-1974 Chevrolet K10 Pickup Base 1968-1974 Chevrolet K10 Suburban Base 1976-1978,1980 Chevrolet K20 Cheyenne 1976-1978,1980 Chevrolet K20 Custom Deluxe 1976-1978,1980 Chevrolet K20 Scottsdale 1976-1978,1980 Chevrolet K20 Silverado 1968-1974 Chevrolet K20 Pickup Base 1968-1974 Chevrolet K20 Suburban Base 1985 Chevrolet K20 Suburban Custom 1985 Chevrolet K20 Suburban Scottsdale 1985 Chevrolet K20 Suburban Silverado 1977,1980-1981 Chevrolet K30 Cheyenne 1981-1986 Chevrolet K30 Custom 1977,1980 Chevrolet K30 Custom Deluxe 1981 Chevrolet K30 Deluxe 1977,1980-1986 Chevrolet K30 Scottsdale 1977,1980-1986 Chevrolet K30 Silverado 1968-1974 Chevrolet K30 Pickup Base 1988-1990 Chevrolet K3500 Cheyenne 1988-1990 Chevrolet K3500 Scottsdale 1988-1990 Chevrolet K3500 Silverado 1976 Chevrolet K5 Blazer Base 1976-1978 Chevrolet K5 Blazer Cheyenne 1977-1978 Chevrolet K5 Blazer Custom Deluxe 1978 Chevrolet K5 Blazer Silverado 1969-1972 Chevrolet Kingswood Base 1969-1972 Chevrolet Kingswood Estate 1970-1974 Chevrolet Monte Carlo Base 1973-1974 Chevrolet Monte Carlo Landau 1973,1975 Chevrolet Monte Carlo S 1969-1972 Chevrolet Nova Base 1988 Chevrolet R20 Cheyenne 1987-1988 Chevrolet R20 Custom Deluxe 1987-1988 Chevrolet R20 Scottsdale 1987-1988 Chevrolet R20 Silverado 1987 Chevrolet R20 Suburban Custom Deluxe 1987-1988 Chevrolet R20 Suburban Scottsdale 1987-1988 Chevrolet R20 Suburban Silverado 1989 Chevrolet R2500 Cheyenne 1989 Chevrolet R2500 Scottsdale 1989 Chevrolet R2500 Silverado 1989-1990 Chevrolet R2500 Suburban Scottsdale 1989-1990 Chevrolet R2500 Suburban Silverado 1988 Chevrolet R30 Cheyenne 1987-1988 Chevrolet R30 Custom Deluxe 1987-1988 Chevrolet R30 Scottsdale 1987-1988 Chevrolet R30 Silverado 1989-1990 Chevrolet R3500 Cheyenne 1989-1990 Chevrolet R3500 Scottsdale 1989-1990 Chevrolet R3500 Silverado 1969-1972 Chevrolet Townsman Base 1987 Chevrolet V20 Suburban Custom Deluxe 1987-1988 Chevrolet V20 Suburban Scottsdale 1987-1988 Chevrolet V20 Suburban Silverado 1990 Chevrolet V2500 Suburban Scottsdale 1990 Chevrolet V2500 Suburban Silverado 1988 Chevrolet V30 Cheyenne 1987-1988 Chevrolet V30 Custom Deluxe 1987-1988 Chevrolet V30 Scottsdale 1987-1988 Chevrolet V30 Silverado 1989-1990 Chevrolet V3500 Cheyenne 1989-1990 Chevrolet V3500 Scottsdale 1989-1990 Chevrolet V3500 Silverado 1975-1978 GMC C15 Base 1977-1978 GMC C15 Heavy Half 1975-1978 GMC C15 High Sierra 1977 GMC C15 Indy Hauler 1975-1978 GMC C15 Sierra Classic 1975-1978 GMC C15 Sierra Grande 1978 GMC C15 Street Coupe 1975-1978 GMC C15 Suburban Base 1975-1978 GMC C15 Suburban High Sierra 1975-1978 GMC C15 Suburban Sierra Classic 1975-1978 GMC C15 Suburban Sierra Grande 1968-1974 GMC C15/C1500 Pickup Base 1968-1974 GMC C15/C1500 Suburban Base 1979-1980 GMC C1500 Base 1979-1980 GMC C1500 Heavy Half 1979-1980 GMC C1500 High Sierra 1979-1980 GMC C1500 Sierra Classic 1979-1980 GMC C1500 Sierra Grande 1979-1980 GMC C1500 Street Coupe 1979-1980 GMC C1500 Suburban Base 1979-1980 GMC C1500 Suburban High Sierra 1979-1980 GMC C1500 Suburban Sierra Classic 1979-1980 GMC C1500 Suburban Sierra Grande 1975-1978 GMC C25 Base 1975-1978 GMC C25 High Sierra 1975-1978 GMC C25 Sierra Classic 1975-1978 GMC C25 Sierra Grande 1975-1978 GMC C25 Suburban Base 1975-1978 GMC C25 Suburban High Sierra 1975-1978 GMC C25 Suburban Sierra Classic 1975-1978 GMC C25 Suburban Sierra Grande 1968-1974 GMC C25/C2500 Pickup Base 1968-1974 GMC C25/C2500 Suburban Base 1979-1986 GMC C2500 Base 1979-1986 GMC C2500 High Sierra 1979-1986 GMC C2500 Sierra Classic 1979-1982 GMC C2500 Sierra Grande 1979-1986 GMC C2500 Suburban Base ## Details - **Price:** 1188.06 CAD - **Vendor:** Edelbrock - **Type:** Intake Manifolds ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1188.06 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - Unmounted - Photo - out of package - Photo - out of package - User 1 - Technical Drawing - Photo - out of package - Photo - Unmounted - Photo - out of package --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/edelbrock-polished-b-b-chev-rect-port-rpm-air-gap-manifold) > Updated: 2026-06-27