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SS 4-1 Long Tube Exhaust Header For 67-91 GMT SBC Chevy GMC C/K 5.0 5.7 Small Block V8

Shipping restriction: This item cannot be shipped to the state of California, New York and Maine.

Free Shipping witihn lower 48 states

International Buyer: Shipping charge does not included Custom Charge and Brokerage Fee (Detail)

California's Prop 65 Warning: Click Here for Detail

Getting more air into your engine and more exhaust out is the key to a performance motor. That's where exhaust headers are significant as the first revenue of an exhaust system. Exhaust performance headers manipulate the airflow with the performance-robbing exhaust manifold that came with your car. Headers provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders, thus, the backpressure that occurs in common exhaust manifolds. When cylinders don't have to fight with each other to expel their exhaust, they can put more power through the wheels, pushing the vehicle. Combining with a high-performance cold air intake and a cat-back exhaust system, a header system removes all restrictions of your engine, then, it is able to perform at its full potential.

  • Material: T304 Stainless Steel
  • Color: Metallic
  • Surface Finish: Chrome Polished
  • Header Spec: 2x 4-1 Design. 3-Bolt Flange. 3" OD to 2.5" OD Weldable Collector Reducer Flanges
  • Pipe Spec: 1 Piece Construction on each header. Optimized Tubing for the 5.0L 305 and 5.7L 350 engines
  • Inlet/Outlet: 1.25"/3.00"
  • Sensor: None
  • Wall Thickness: 3/8" Flange / 16-Gauge Piping Walls
  • Headers are made with high-quality stainless steel, Mandrel bent tubing, CNC Machined Flanges.
  • Increase Horsepower and Torque. Gain More performance Due to More Air Flow
    Better fuel mileage with improved combustion


For 1969-1991 Chevrolet Blazer
For 1975-1986 Chevrolet C10
For 1967-1986 Chevrolet C10 Suburban
For 1975-1986 Chevrolet C20
For 1967-1986 Chevrolet C20 Suburban
For 1975-1986 Chevrolet C30
For 1975-1986 Chevrolet K10
For 1967-1986 Chevrolet K10 Suburban
For 1975-1986 Chevrolet K20
For 1967-1986 Chevrolet K20 Suburban
For 1977-1986 Chevrolet K30
For 1987 Chevrolet R10
For 1987-1988 Chevrolet R10 Suburban
For 1989-1991 Chevrolet R1500 Suburban
For 1987-1988 Chevrolet R20
For 1987-1988 Chevrolet R20 Suburban
For 1989-1991 Chevrolet R2500 Suburban
For 1987-1988 Chevrolet R30
For 1989-1991 Chevrolet R3500
For 1987 Chevrolet V10
For 1987-1988 Chevrolet V10 Suburban
For 1989-1991 Chevrolet V1500 Suburban
For 1987-1988 Chevrolet V20 Suburban
For 1989-1991 Chevrolet V2500 Suburban
For 1987-1988 Chevrolet V30
For 1989-1991 Chevrolet V3500

For 1975-1978 GMC C15
For 1975-1978 GMC C15 Suburban
For 1979-1986 GMC C1500
For 1979-1986 GMC C1500 Suburban
For 1975-1978 GMC C25
For 1975-1978 GMC C25 Suburban
For 1979-1986 GMC C2500
For 1979-1986 GMC C2500 Suburban
For 1975-1978 GMC C35
For 1979-1986 GMC C3500
For 1970-1991 GMC Jimmy
For 1975-1978 GMC K15
For 1975-1978 GMC K15 Suburban
For 1979-1986 GMC K1500
For 1979-1986 GMC K1500 Suburban
For 1975-1978 GMC K25
For 1975-1978 GMC K25 Suburban
For 1979-1986 GMC K2500
For 1979-1986 GMC K2500 Suburban
For 1977-1978 GMC K35
For 1979-1986 GMC K3500
For 1987 GMC R1500
For 1987-1991 GMC R1500 Suburban
For 1987-1989 GMC R2500
For 1987-1991 GMC R2500 Suburban
For 1987-1991 GMC R3500
For 1987 GMC V1500
For 1987-1991 GMC V1500 Suburban
For 1987 GMC V2500
For 1987-1991 GMC V2500 Suburban
For 1987-1991 GMC V3500

Remark: Fit Models with 5.0L 5.7L 283/302/305/307/327/350/400 GMT Small Block SBC V8


All exhaust and suspension products are deemed for "off-road use only"- please check local laws regarding the modification of the exhaust systems by checking the vehicle code for your state. Many states are more stringent on exhaust modification laws and to pass SMOG. Please check your local laws.

All exhaust system components will alter and affect the vehicle's overall sound in pitch and volume. All to which is subjective in manner. we will not claim responsibility and/or accept returns based on an individual's personal preference.

Recommended for Racing/Off-Road Use ONLY, Will Not Pass Emissions Test

Product Content:

  • 1 Pair x Exhaust Header Manifold Kit (Left & Right)
    Hardware if any is shown in the picture above

The product does not come with manual/instruction, Professional Install Recommended

Cross Reference Number: