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Flowtech Afterburner Headers - Painted

73-87 Chevy/GMC 1/2, 3/4 & 1-Ton Pick-Up, 4WD, 88-91 Chevy/GMC Pick-Up, 4WD, 1-Ton Crewcab, 73-91 Blazer/Jimmy/Suburban 4WD: 283-400, Tube Size 1.625", Collector Size 3"

PART# 49152FLT

Suggested Retail: $255.95
Your Price:$229.95
Free Shipping on orders over $100*
  • Premium high-temperature black finish
  • Horsepower and Torque increased over conventional header design
  • Big 3” secondary collector for reduced back pressure
  • Tuned-length primary tubes combine with Velocity Tube to smooth out exhaust pulses
  • Patented Velocity Tube increases cylinder scavenging
  • All hardware and premium gaskets included for a complete installation
FLOWTECH's Afterburner Turbo Chamber Headers represent the first new major design change in exhaust technology in decades. This designs combines the race-proven 4 into 1 design with the torque managing capabilities of a Tri-Y header. The turbo chamber helps smooth out exhaust turbulence for increased performance and a broad power curve. This header is coated in a high temperature electrostatic gray finish.
BrandFlowtech
Collector Diameter3 inch
Emission Code3
Header FinishBlack Paint
Header StyleLong Tube
Primary Tube Dia.1-5/8 inch
Product TypeHeader
Tube MaterialMild Steel
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.

This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

*Free Shipping & Handling only offered to the continental US on orders over $100.

About Us

Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Holley's products include performance fuel pumps, fuel injection, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition.