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Flowtech Headers 11578FLT Headers, Shorty, Stainless Steel, Natural, 1 5/8 in. Primary, Chevy, GMC, Small Block, Pair

SKU: BIG11578FLT

Headers

Flowtech Headers 11578FLT Headers, Shorty, Stainless Steel, Natural, 1 5/8 in. Primary, Chevy, GMC, Small Block, Pair

SKU: BIG11578FLT

Headers
A$940.60
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Flowtech headers are designed to provide optimum exhaust flow for increased horsepower, torque, fuel economy, and improved throttle response. Leak-tested for maximum performance, they feature the industry's best welds for durability and are carefully engineered for precise fit. Available for a wide range of applications, they're offered in block hugger, competition, fenderwell, lakester, long tube, mid-length, shorty, upright, and turbo styles. Varying with the application, Flowtech headers are constructed from sturdy and lightweight cold-rolled mild steel or stainless steel for increased strength and durability. All tubing is mandrel-bent to provide consistent tubing diameter for smooth flow and increased exhaust velocity. Extra-thick, machined header flanges provide a leak-free seal and maximum strength. For long-term rust and corrosion-resistance, available finishes include natural and polished stainless steel, high heat-resistant black paint, or a satin silver metallic ceramic thermal barrier coating. All mounting hardware and premium gaskets are included.

Important notes: 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. Hooker recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Flowtech does not recommend the use of header wraps as this will void the warranty.

Part Type

Exhaust Hearder Set - GM LS Swap 82-04 GM S10 Trk

Data: v4.2 - Upd: 2026-09-30 05:07:25

Specifications

Product Attributes - Brand
Flowtech
Product Attributes - Manufacturer's Part Number
11578FLT
Product Attributes - Part Type
Headers
Product Attributes - Product Line
Flowtech Headers
Product Attributes - UPC
090127037713
Product Attributes - Header Style
Shorty
Product Attributes - Header Material
304 stainless steel
Product Attributes - Primary Tube Outside Diameter (in.)
1 5/8 in.
Product Attributes - Header Color
Natural
Product Attributes - Flange Style
Standard
Product Attributes - Weld-Up
No
Product Attributes - Collector Attachment
3-bolt flange
Product Attributes - Collector Diameter (in.)
2.50
Product Attributes - Collector Reducers Included
Yes
Product Attributes - Collector Reducer Exit Diameter
2.500 in.
Product Attributes - Tuned
No
Product Attributes - Flange Thickness (in.)
0.38 in.
Product Attributes - Bolts/Studs Included
Yes
Product Attributes - Gaskets Included
Yes
Product Attributes - Crossover Pipe Included
No
Product Attributes - Catalytic Converter(s) Included
No
Product Attributes - Motor Mounts Included
No
Product Attributes - Transmission Mount Included
No
Product Attributes - Quantity
Sold as a pair.
Product Attributes - Notes
Works with White Box Mounts - WB13002. Does NOT work with Hooker Blackheart S10 Swap Mounts - HOK-71221029HKR

Reference Information

Brand Name/s Flowtech
StreetFX SKU big11578FLT
SFX Item ID 5092135
Supplier Item Code 5092135
Manufacturer SKU 11578FLT
Manufacturer UPC 90127037713
Alternative References FLT11578

Compatibility

Application Data
  • MakeCHEVROLET
    ModelS10
    Beginning Year1982
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeCHEVROLET
    ModelS10
    Beginning Year1982
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeCHEVROLET
    ModelS10
    Beginning Year1982
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeCHEVROLET
    ModelS10
    Beginning Year1982
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeCHEVROLET
    ModelS10
    Beginning Year1982
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeCHEVROLET
    ModelS10
    Beginning Year1982
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.0L/427
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelS15
    Beginning Year1982
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelS15
    Beginning Year1982
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelS15
    Beginning Year1982
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelS15
    Beginning Year1982
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelS15
    Beginning Year1982
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelS15
    Beginning Year1982
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.0L/427
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelSONOMA
    Beginning Year1991
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelSONOMA
    Beginning Year1991
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelSONOMA
    Beginning Year1991
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelSONOMA
    Beginning Year1991
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelSONOMA
    Beginning Year1991
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.
  • MakeGMC
    ModelSONOMA
    Beginning Year1991
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.0L/427
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftYes
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesHeaders are 304 stainless steel.

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