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Flowtech Headers 11705-7FLT Headers, Block Hugger, Stainless, Polished, 2.5 in. Collector, D-port, Street Rod, Chevy Small Block, Pair

SKU: BIG11705-7FLT

Headers

Flowtech Headers 11705-7FLT Headers, Block Hugger, Stainless, Polished, 2.5 in. Collector, D-port, Street Rod, Chevy Small Block, Pair

SKU: BIG11705-7FLT

Headers

Sale ends in Calculating...

A$1,302.29 A$1,412.31
LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.
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Description

IMPORTANT NOTICE: Headers will not work with OEM factory motor mounts.

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

Headers - SBC D-Port Block Hugger Style

Data: v4.2 - Upd: 2026-09-30 21:26:36

Specifications

Product Attributes - Brand
Flowtech
Product Attributes - Manufacturer's Part Number
11705-7FLT
Product Attributes - Part Type
Headers
Product Attributes - Product Line
Flowtech Headers
Product Attributes - UPC
090127690796
Product Attributes - Header Style
Block hugger
Product Attributes - Header Material
304 stainless steel
Product Attributes - Primary Tube Outside Diameter (in.)
1 5/8 in.
Product Attributes - Header Color
Polished
Product Attributes - Flange Style
Standard
Product Attributes - Weld-Up
No
Product Attributes - Cylinder Head Port Shape
D-port
Product Attributes - Collector Attachment
3-bolt flange
Product Attributes - Collector Diameter (in.)
2.50
Product Attributes - Collector Reducers Included
No
Product Attributes - Tuned
No
Product Attributes - Primary Tube Gauge
16-gauge
Product Attributes - Spark Plug Position
Angle/Straight
Product Attributes - Flange Thickness (in.)
0.38 in.
Product Attributes - Bolts/Studs Included
No
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
Headers will not work with OEM factory motor mounts.

Reference Information

Brand Name/s Flowtech
StreetFX SKU big11705-7FLT
SFX Item ID 5092216
Supplier Item Code 5092216
Manufacturer SKU 11705-7FLT
Manufacturer UPC 90127690796
Alternative References FLT11705-7

Compatibility

Application Data
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.3L/262
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.3L/265
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.4L/267
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.6L/283
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.9L/302
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.0L/305
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.0L/307
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.3L/327
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.4L/327
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeCHEVROLET
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo

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