Standard Headers for Chevy 396-454
InfoVehicle Info Needed
FLOWTECHPART NUMBER: 387-31530

Standard Headers for Chevy 396-454

$25995
ShippingShips on 12/07/2026
Lowest PriceLowest Price Guarantee

GM Truck/SUV
Standard Headers
  • Chevy 396-454
  • 1968-81 Chevy/GMC 1/2-Ton & 3/4-Ton 4WD
  • 1968-87 GM 1/2, 3/4, 1-Ton & Blazer/Jimmy 2WD
  • 1973-81 Blazer/Jimmy K5, Suburban 4WD
  • 1973-91 Chevy/GMC Suburban 2WD
  • 1.75'' Tube
  • 3'' Collector
  • Ceramic Coated

    Features:
    • Must modify stock exhaust to retain catalytic converters
    • Applications with oxygen sensors use reducers 387-10110 for 3' three bolt flange
    • Must use original factory Big Block engine frame mounts and hardware

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    • 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

      Show More

      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 Height9.5
    Package Width19.5
    Package Length37.5
    Weight33.0 PG
    Part CategoryPerformance Parts
    Header FinishSilver ceramic coated
    Tube DirectionDown Swept
    QuantitySold as a pair
    Bolts/Studs IncludedYes
    Transmission Mount IncludedNo
    Header MaterialSteel
    Gaskets IncludedYes
    Weld-UpNo
    Collector Attachment3-bolt flange
    Flange StyleStandard
    TunedNo
    Collector Diameter3 in (76.2 mm)
    Motor Mounts IncludedNo
    Part FitmentSemi Universal
    Reducers IncludedYes
    ApplicationAutomotive
    Primary Tube Gauge18-gauge
    Header StyleFull-length
    Cross Over Pipe IncludedNo
    Catalytic Converter(S) IncludedNo
    Primary Tube Diameter1.75 in (44.5 mm)
    Vendor Part Number31530FLT
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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