Flowtech Long Tube Headers - 1966-87 Chevy/GMC 1500/2500/3500/1988-91 Chevy/GMC 1-Ton Crew Cab - 283/400 - 1.5" - 3" Collector - Black Paint

In stock
SKU: FLT11500
Headers, Full Length, 1.5 in Primary, 3 in Collector, Steel, Black Paint, Small Block Chevy, GM Fullsize SUV / Truck 1966-91, Pair

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Regular price $213.38
Regular price Sale $255.95 Sale price $213.38
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PROP 65: These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm

Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.

Vehicle Applications:

  • 1975-1978 GMC C35
  • 1975-1978 GMC K25 Suburban
  • 1975-1986 Chevrolet K5 Blazer
  • 1977-1978 GMC K35
  • 1969-1991 Chevrolet Blazer
  • 1973-1986 Chevrolet C10 Suburban
  • 1973-1986 Chevrolet C20 Suburban
  • 1975-1978 GMC K15
  • 1968-1974 GMC K15/K1500 Suburban
  • 1975-1978 GMC K15 Suburban
  • 1979-1986 GMC C3500
  • 1987-1987 Chevrolet V10
  • 1987-1988 Chevrolet R30
  • 1987-1988 Chevrolet V10 Suburban
  • 1989-1991 Chevrolet V1500 Suburban
  • 1987-1987 GMC R2500 Suburban
  • 1987-1988 Chevrolet R20 Suburban
  • 1987-1991 GMC V3500
  • 1973-1974 Chevrolet K30 Pickup
  • 1973-1974 GMC C35/C3500 Pickup
  • 1975-1978 GMC C15 Suburban
  • 1987-1987 GMC V1500
  • 1979-1986 GMC C2500
  • 1979-1986 GMC C2500 Suburban
  • 1979-1986 GMC K2500
  • 1987-1988 Chevrolet V20 Suburban
  • 1967-1974 GMC K25/K2500 Pickup
  • 1966-1974 Chevrolet K20 Pickup
  • 1967-1974 GMC K15/K1500 Pickup
  • 1967-1974 GMC C15/C1500 Pickup
  • 1967-1974 GMC C15/C1500 Suburban
  • 1967-1974 GMC C25/C2500 Pickup
  • 1966-1974 Chevrolet C20 Pickup
  • 1966-1974 Chevrolet K10 Pickup
  • 1975-1978 GMC K25
  • 1975-1986 Chevrolet C30
  • 1975-1986 Chevrolet K20
  • 1968-1974 GMC K25/K2500 Suburban
  • 1968-1986 Chevrolet K20 Suburban
  • 1970-1991 GMC Jimmy
  • 1973-1974 Chevrolet C30 Pickup
  • 1975-1978 GMC C25 Suburban
  • 1977-1986 Chevrolet K30
  • 1975-1978 GMC C25
  • 1975-1986 Chevrolet C10
  • 1975-1986 Chevrolet K10
  • 1989-1991 Chevrolet R2500 Suburban
  • 1987-1987 Chevrolet V20
  • 1987-1987 GMC V1500 Suburban
  • 1987-1987 GMC V2500
  • 1987-1987 GMC V2500 Suburban
  • 1987-1988 Chevrolet R10 Suburban
  • 1979-1986 GMC C1500
  • 1979-1986 GMC K1500
  • 1979-1986 GMC K2500 Suburban
  • 1979-1986 GMC K3500
  • 1989-1991 Chevrolet R1500 Suburban
  • 1989-1991 Chevrolet R3500
  • 1989-1991 Chevrolet V2500 Suburban
  • 1989-1991 Chevrolet V3500
  • 1987-1991 GMC R3500
  • 1966-1966 Chevrolet Suburban
  • 1966-1974 Chevrolet C10 Pickup
  • 1967-1974 GMC C25/C2500 Suburban
  • 1968-1986 Chevrolet K10 Suburban
  • 1973-1974 GMC K35/K3500 Pickup
  • 1975-1978 GMC C15
  • 1975-1986 Chevrolet C20
  • 1979-1986 GMC C1500 Suburban
  • 1979-1986 GMC K1500 Suburban
  • 1987-1987 Chevrolet R10
  • 1987-1987 GMC R1500
  • 1987-1987 GMC R1500 Suburban
  • 1987-1987 GMC R2500
  • 1987-1988 Chevrolet R20
  • 1987-1988 Chevrolet V30
  • Flowtech Performance Exhaust was founded in 1994, by exhaust market expert Gary Biggs, with the mission of delivering high quality performance exhaust at a great value. The mission was successful and in less than two decades Flowtech became the leader in value priced exhaust systems. Flowtech cornered its place in the market with aggressive and memorable product names such as Raptor, Terminator, Afterburner and Warlock. Flowtech even revived some names from back in the day like Purple Hornies. Flowtech made its mark with simple yet effective improvements like slotted port flanges giving added wiggle room during header installation. They dimpled their tubes at the port to make more room for the header bolts and they parallel ground their flanges to assure a tight seal. Flowtech innovations include their unique Afterburner headers which separated the odd firing cylinders with a velocity tube to improve scavenging. Their patented Warlock bypass muffler won the SEMA best new product award for its revolutionary open or closed design in 1996. When Flowtech became part of Holley Performance Products in 1999, the company continued to focus on value, with an emphasis on late model cars and trucks. Headers and exhaust systems were developed for Mustangs, Camaros, and all types of full size trucks - including diesels. The same innovation continues today with the addition of universal X-pipe kits and X-pipe kits with built in cut-outs. Continuous product updates and improvements to manufacturing processes will keep Flowtech the leader in value priced exhaust systems. We hope you enjoy your Flowtech product as much as we enjoy building it!

    Product Description:

  • Headers
  • Full Length
  • 1.5 in Primary
  • 3 in Collector
  • Steel
  • Black Paint
  • Small Block Chevy
  • GM Fullsize SUV / Truck 1966-91
  • Pair
  • Flowtech Performance Exhaust was founded in 1994, by exhaust market expert Gary Biggs, with the mission of delivering high quality performance exhaust at a great value. The mission was successful and in less than two decades Flowtech became the leader in value priced exhaust systems.

    Flowtech cornered its place in the market with aggressive and memorable product names such as Raptor™, Terminator™, Afterburner™ and Warlock™. Flowtech even revived some names from back in the day like Purple Hornies™.

    Flowtech made its mark with simple yet effective improvements like slotted port flanges giving added wiggle room during header installation. They dimpled their tubes at the port to make more room for the header bolts and they parallel ground their flanges to assure a tight seal. Flowtech innovations include their unique Afterburner headers which separated the odd firing cylinders with a velocity tube to improve scavenging. Their patented Warlock bypass muffler won the SEMA best new product award for its revolutionary open or closed design in 1996.