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Flowtech 11170

Long Tube Headers

Flowtech 11170

387-11170

Flowtech 11170 Long Tube Headers $196.95
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JEGS Performance Products Painted Long Tube Headers for Pontiac 326-455
JEGS Performance Products 555-30065
$134.99
View Details
Long Tube Headers
  • Pontiac 350-455
  • 1964-1975 GTO, Le Mans, Grand Am
  • 1970-1979 Firebird
  • 1.625'' Tube
  • 3'' Collector
  • Painted Black

  • Flowtech 11170 Details

    GM Cars

  • Must Modify Stock Exhaust to Retain Catalytic Converter
  • Will Not Fit Ram Air Applications
  • Must Drill End Holes in Cylinder Head to Ensure Proper Gasket Seal

  • Specifications:

    Engine Make/Size
    Pontiac 350-455
    Engine Make/Size
    Pontiac 350-455
    Material
    Mild Steel
    Coating/Finish
    Painted
    Collector Tube Size (in.)
    3
    Application
    Automotive
    Tube Diameter
    1.625
    Port Shape
    D-Port
    Tube Direction
    Down Swept
    Gaskets Included
    Yes
    Header Finish
    Painted
    Header Material
    Steel
    Header Style
    Full-length
    Motor Mounts Included
    No
    Tuned
    No
    Bolts/Studs Included
    Yes
    Catalytic Converter(s) Included
    No
    Cross Over Pipe Included
    No
    Reducers Included
    Yes
    Transmission Mount Included
    No
    Weld-Up
    No
    Primary Tube Diameter (in.)
    1 5/8
    Quantity
    Sold as a pair
    Primary Tube Gauge
    18-gauge
    Flange Style
    Standard
    Collector Attachment
    3-bolt flange
    Collector Diameter (in.)
    3
    Finish
    Black Paint
    Cylinder Head Port Shape
    D-port
    Tube Size
    1.625
    Manufacturer's Part Number:
    11170

    Performance Plus Fuel Economy at a Price You Can Afford!

    FlowTech headers are made of 16-gauge tubing that's welded to O-ring port exhaust flanges on one end and mandrel-formed collectors on the other. You get a premium performance-minded design with a budget-minded attitude!

    Features

    • 16-gauge (.049" thick) cold-rolled mild steel (except stainless steel were noted)
    • Precision engineered for performance, fuel economy, and fit
    • Mandrel-formed plenum increases flow for more power
    • Leakproof O-ring port seals quality tested by FlowTech
    • Finished with black paint or ceramic coating, polished available for some applications

    Does Flowtech 11170 fit your vehicle?

    Narrow Results

    1970 PONTIAC FIREBIRD

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: TRANS AM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972-1974 PONTIAC LEMANS

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • EngineType: ALL
    • SubModel: LUXURY

    1964-1966 PONTIAC GTO

    • CC: 6376
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1973 PONTIAC LEMANS

    • CC: 7457
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970-1971 PONTIAC LEMANS

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 PONTIAC LEMANS

    • CC: 7457
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: SPORT
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970-1971 PONTIAC LEMANS

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: SPORT
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1973 PONTIAC GTO

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1974 PONTIAC LEMANS

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • EngineType: ALL
    • SubModel: SAFARI LUXURY

    1973 PONTIAC GRAND AM

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974 PONTIAC GRAND AM

    • CC: 7457
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1978-1979 PONTIAC FIREBIRD

    • Liter: 5.7
    • SubModel: FORMULA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC FIREBIRD

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: TRANS AM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1971 PONTIAC LEMANS

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: SPORT
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1974 PONTIAC LEMANS

    • CC: 6556
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975 PONTIAC GRAND AM

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1964-1967 PONTIAC LEMANS

    • CC: 5343
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1975-1977 PONTIAC FIREBIRD

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: ESPRIT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971 PONTIAC FIREBIRD

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1977 PONTIAC FIREBIRD

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: FORMULA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971 PONTIAC FIREBIRD

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: TRANS AM
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970-1971 PONTIAC FIREBIRD

    • CC: 5733
    • Liter: 5.7
    • SubModel: FORMULA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1974 PONTIAC FIREBIRD

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: ESPRIT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1974 PONTIAC FIREBIRD

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 PONTIAC FIREBIRD

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • Aspiration: N
    • SubModel: TRANS AM
    • Engine Vin: T
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1969-1970 PONTIAC LEMANS

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971 PONTIAC LEMANS

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1972-1974 PONTIAC FIREBIRD

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: FORMULA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969-1970 PONTIAC LEMANS

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 PONTIAC FIREBIRD

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: TRANS AM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971 PONTIAC LEMANS

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: T37
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC FIREBIRD

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: TRANS AM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC LEMANS

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1974 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC LEMANS

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC LEMANS

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 PONTIAC GRAND AM

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC GRAND AM

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 PONTIAC LEMANS

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC FIREBIRD

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • Aspiration: N
    • SubModel: TRANS AM
    • Engine Vin: Y
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1978-1979 PONTIAC FIREBIRD

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC FIREBIRD

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: FORMULA
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 PONTIAC LEMANS

    • CC: 6556
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971 PONTIAC FIREBIRD

    • CC: 5733
    • Liter: 5.7
    • SubModel: TRANS AM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC GRAND AM

    • CC: 6556
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968-1971 PONTIAC LEMANS

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 PONTIAC LEMANS

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1977 PONTIAC FIREBIRD

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 PONTIAC LEMANS

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • Aspiration: N
    • SubModel: SPORT
    • Engine Vin: Y
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970-1971 PONTIAC GTO

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • EngineType: ALL
    • SubModel: THE JUDGE

    1974 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 PONTIAC GRAND AM

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1973-1974 PONTIAC LEMANS

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: SPORT
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968-1971 PONTIAC LEMANS

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970 PONTIAC FIREBIRD

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: TRANS AM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 PONTIAC LEMANS

    • CC: 7457
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968-1973 PONTIAC GTO

    • CC: 6555
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972-1974 PONTIAC FIREBIRD

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • Aspiration: N
    • SubModel: TRANS AM
    • Engine Vin: X
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970 PONTIAC LEMANS

    • CC: 7456
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975-1976 PONTIAC FIREBIRD

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • EngineType: ALL
    • SubModel: TRANS AM

    1977-1979 PONTIAC FIREBIRD

    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 6.6
    • SubModel: TRANS AM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1971 PONTIAC FIREBIRD

    • CC: 5733
    • Fitment_Note: End Holes On Head Must Be Drilled And Tapped To Assure Proper Seal
    • Liter: 5.7
    • SubModel: ESPRIT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 PONTIAC FIREBIRD

    • Liter: 5.7
    • SubModel: ESPRIT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )
    11170 is rated 2.0 out of 5 by 1.
    Rated 2 out of 5 by from rust not sure if it will impact anything but these headers have heavy surface rust inside of them,, like they were stored in a damp place or something, other then that they seem durable,, im going to try to clean them out before install
    Date published: 2015-09-11
    • y_2018, m_5, d_19, h_20
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
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    • co_hasreviews, tv_0, tr_1
    • loc_en_US, sid_10001_10001_124784, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
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