Long Tube Header for 1966-1974 Chevy Blazer/C10, GMC C15/C1500/C25/C2500 [Painted]
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FLOWTECHPART NUMBER: 387-11500

Long Tube Header for 1966-1974 Chevy Blazer/C10, GMC C15/C1500/C25/C2500 [Painted]

$22395$249.95You Save$26.00
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GM Truck/SUV
Long Tube Exhaust Header
  • 1966-1974 Chevy Blazer/C10, GMC C15/C1500/C25/C2500
  • Small Block Chevy Engine Applications
  • 1 1/2 In. Primary Tubes, 3.00 In. Collector
  • Mild Steel Construction
  • Painted Finish
  • Sold As a Pair

    A performance header upgrade for the Small Block Chevy platform, engineered to improve exhaust flow and add horsepower over the stock manifold.

    Flowtech Long Tube Header Features:

    • 1 1/2 in. primary tube diameter for optimized exhaust velocity.
    • 3.00 in. collector diameter for a smooth transition into the exhaust system.
    • Mild Steel construction with a painted finish for durability.
    • Sold as a Pair, complete with mounting hardware and gaskets for installation.
    • Bolt-On Exhaust Headers for High-Flowing Performance!

      Flowtech is a smart choice for quality performance exhaust headers at a great price.  All Flowtech Headers application-specific for an exact fit and feature a 3/8 in. thick flange to provide a leak-free seal

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      A free-breathing engine is essential to performance, and that includes exhaust as much as intake. A set of headers from FlowTech is a great enhancement that can help you get the performance you want, at a surprisingly affordable price. All headers from FlowTech are designed for a precise fit, and custom engineered for specific applications. 

      Performance Benefits & Key Features

      FlowTech headers are available in long tube or shorty designs, with black finish, great-looking polished stainless or ceramic coating. Y-pipes are available for select header designs, for ease of connection. All FlowTech headers feature a ⅜” thick flange to ensure a leak-free seal at the cylinder head. 3-bolt flanges and 3” collectors are standard with FlowTech headers. 

      Fitment, Compatibility & Applications

      FlowTech headers are available for all kinds of 60s and 70s era vehicles, including Mopars, Chevrolet, Ford, Pontiac and Oldsmobile, including fitments for Ford, Chevrolet and Dodge trucks. FlowTech even offers headers for rare and esoteric fitments like the Ford 352 to 428 FE engine family as well as Jeep engines, Oldsmobile 260 and 403 engines and AMC 290 and 401 engines. This includes popular models like the Mustang, Camaro, Nova, Chevelle and Camaro as well as full-size cars like the Impala and Caprice, as well as hard-to-find fitments for rides like the Ford Maverick, Dodge Ramcharger, Ford Fairlane, Ford Torino and even the 1980s Monte Carlo.

      Some applications might require modifying stock exhaust to retain the catalytic converter, or modifications to parts like the AC compressor bracket or power steering pump bracket. Exhaust header wrap and spark plug wire boot guards are recommended when installing headers. Remember to check your state’s laws regarding emissions and exhaust modifications for street-driven vehicles; in some cases, headers are only permissible for non-emission controlled vehicles or vehicles used solely for the purpose of closed competition racing. 

      FlowTech also offers headers that are compatible with later vehicles equipped with catalytic converters, as well as a reducer that can be used with oxygen sensors. Tough 18 gauge tubing is designed for durability and rust resistance. 

      FlowTech headers come with all hardware and connectors needed for installation. All in all, FlowTech is a smart choice when you want to boost exhaust flow and spike horsepower and performance, at an affordable price.

    Part TypeHeader
    Product LineFlowTech Headers
    BrandFLOWTECH
    Package Height10.0
    Package Width18.0
    Package Length37.0
    Weight26.0 PG
    Part CategoryPerformance Parts
    Header Flange Thickness0.3125 in.
    ColorBlack
    QuantityPair
    MaterialMild Steel
    Engine Make/SizeChevy Small Block Gen I
    Port ShapeOval
    Carb CompliantNo
    Collector Diameter3.00 in.
    Part FitmentDirect Fit
    Primary Tube Outside Diameter1.5 in (38.1 mm)
    FinishPainted
    Header StyleLong Tube
    Grade TypePerformance
    Primary Tube Diameter1 1/2 in.
    Vendor Part Number11500FLT
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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