1998 Hedman Parts

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Hedman
  • Uncoated Headers; 1-1/2 in. Tube Dia; 2-1/2 in. Coll; Stock Head; MID-LENGTH
  • Air Conditioning: Yes Power Steering: Yes Auto Transmission - Column: No Auto Transmission - Floor: Yes Manual Transmission - Column: No Manual Transmission - Floor: Yes Footnotes: (229) Engine Swap Headers. Emissions Notes: RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles. Engine Family: SB Chevy 283-400 (Gen 1) Contents:headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware Drivetrain:2WD Only! Y-Pipe Included:No with EGR:No with A.I.R. System:No Package Contents:Set of Headers, mounting hardware and gaskets Installation Hardware Included:Yes Replacement Gasket:27500 Cylinder Head:Stock Profile Heads Quantity:Sold as a pair. Motor Mounts Included:No Crossover Pipe Included:No Catalytic Converter(s) Included:No Collector Bolts Included:Yes Catalog Code:HED Weld-Up:No Tuned:No Primary Tube Gauge:18g Primary Tube Diameter (in):1.50 in. Mounting Hardware Included:Yes Header Material:Mild Steel Header Finish:Uncoated Cylinder Head Port Shape:Round Variations:69526, 69528 Tube Style:Mid-Length Tube Size:1-1/2 in. Tube Material Thickness:18g Tube Length:Mid-Length Tubes Tube Diameter:1-1/2 in. Reducer Outlet Size:2-1/2 in. Power Steering:Yes Port Shape:Round Material:Mild Steel Manual Transmission - Floor:Yes Manual Transmission - Column:No Key Feature:2WD Only. Header Port Shape:Round Replacement Head Flange Gasket:27500 Flange Style:Standard Finish Type:Uncoated Mild steel Finish:Uncoated Exhaust System Dia:2-1/2 in. Title:HEDMAN HEDDERS STANDARD UNCOATED HEADERS; 1-1/2 IN. TUBE DIA.; 2-1/2 IN. COLL.; STOCK HEADS; SHORTY DESIGN Collector Style:Ball and Socket Style (Gasketless) Collector Size:2-1/2 in. Automatic Transmission - Floor:Yes Automatic Transmission - Column:No Air Conditioning:Yes Reducers Included:Yes Header Style:Mid-Length Tube Gasket Or Seal Included:Yes Collector Attachment:2-1/2 in. Flange Thickness:0.25 in. Bolts/Studs Included:Yes Use With:Transmission Dapt. Motor Mount Kit #9906 Header Construction:Standard-Duty E.O. #:No California Proposition 65:WARNING: Cancer. For more info visit www.P65Warnings.ca.gov Emissions Notes:NOT LEGAL FOR STREET USE ON '75-LATER MODEL YEARS! Legal for off-road use only. Collector Diameter:2-1/2 in. Notes :82-00 GM S10/15, Blazer, Jimmy, Sonoma 2WD SBC Tube Design:MID-LENGTH Engine:Chevy SB 283-400 (Gen 1) 1958-86 Head Type:Factory Heads
  • Standard Uncoated Headers; 1-1/2 in. Tube Dia.; 2-1/2 in. Coll.; Stock Heads; MID-LENGTH Design
  • Product Attributes:
    • California Proposition 65: Warning: Cancer. For More Info Visit Www.p65warnings.ca.gov
    • Header Port Shape: Round
    • Quantity: Sold As A Pair.
    • with A.I.R. System: No
    • Cylinder Head: Stock Profile Heads
    • Tuned: No
    • Cylinder Head Port Shape: Round
    • Header Style: Mid-length Tube
    • Manual Transmission - Column: No
    • Flange Style: Standard
    • Collector Bolts Included: Yes
    • Bolts/Studs Included: Yes
    • Automatic Transmission - Floor: Yes
    • with EGR: No
    • Tube Material Thickness:
      • 16g
      • 18g
    • Tube Diameter: 1-1/2 In.
    • Automatic Transmission - Column: No
    • Head Type: Factory Heads
    • Package Contents: Headers, Ball And Socket Reducers (exhaust Adapters), Gaskets, Mounting Hardware
    • Reducer Outlet Size: 2-1/2 In.
    • Tube Size: 1-1/2 In.
    • Port Shape: Round
    • Tube Length: Mid-length Tubes
    • Manual Transmission - Floor: Yes
    • Collector Diameter: 2-1/2 In.
    • Tube Style: Mid-length
    • Variations: 69526, 69528
    • Drivetrain: 2wd Only!
    • Collector Size: 2-1/2 In.
    • Header Finish: Uncoated
    • Mounting Hardware Included: Yes
    • Weld-Up: No
    • Collector Attachment: 2-1/2 In.
    • Header Fasteners Included: Yes
    • Use With: Trans Dapt. Motor Mount Kit #9906
    • Y-Pipe Included: No
    • Contents: Headers, Gaskets (when Applicable), 3-bolt Exhaust Adapters, Hardware
    • Finish Type: Uncoated Mild Steel
    • Notes: 82-00 Gm S10/15, Blazer, Jimmy, Sonoma 2wd Sbc
    • Motor Mounts Included: No
    • Primary Tube Diameter (in): 1.50 In.
    • Crossover Pipe Included: No
    • Header Construction:
      • Mild Steel- Standard-duty
      • Standard-duty
    • Replacement Head Flange Gasket: 27500
    • Tube Design:
      • Mid-length
      • Standard
    • Key Feature: 2wd Only.
    • Power Steering: Yes
    • E.O. #: No
    • Exhaust System Dia: 2-1/2 In.
    • Flange Thickness:
      • 0.25 In.
      • 0.3125 In.
    • Engine: Chevy Sb 283-400 (gen 1) 1958-86
    • Air Conditioning: Yes
    • Installation Hardware Included: Yes
    • Reducers Included: Yes
    • Primary Tube Gauge:
      • 16g
      • 18g
    • Header Material: Mild Steel
    • Title: Hedman Hedders Standard Uncoated Headers; 1-1/2 In. Tube Dia.; 2-1/2 In. Coll.; Stock Heads; Shorty Design
    • Catalytic Converter(s) Included: No
    • Replacement Gasket: 27500
    • Collector Style: Ball And Socket Style (gasketless)
    • Emissions Notes: Not Legal For Street Use On '75-later Model Years! Legal For Off-road Use Only.
  • Features:
    • Handcrafted, Mild Steel Construction.
    • The Mid-Length Tube Header Design Provides Significantly More Low and Mid-range Power than Cast Manifolds, and Provide Better Ground Clearance And Component Compatibility Than Long Tube Headers.
    • Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors
    • Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters)
    • Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating!
    • Proud To Say, Made In The USA, Since 1954!
  • Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing Chevy S10, GMC S15, V8 engine swap specific headers for over 20 years. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

    These uncoated, MID-LENGTH TUBE headers are designed specifically for installing a Small Block Chevy 283-400 (Gen 1) engine into 1982-2004 Chevy S10/Blazer, GMC S15/Jimmy 2WD trucks. Fits both manual and automatic transmission trucks. The smooth 1-1/2 in. tube design provides ample exhaust flow to let your transplanted 283-400 SB Chevy engine breathe easy, and produce additional horsepower and torque over factory manifolds.

    To ensure a proper installation, it is recommended that these headers be installed with Trans-Dapt Performance Product's #9906 engine swap mount kit.

    These headers are uncoated, and ship from the factory with a temporary black paint that will burn off when submitted to normal operating temperatures. For protection against the element and lower underhood temperatures, these headers are also available with a silver or black ceramic-metallic finish.

    Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.

    Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.


Additional Fitment Information:
Vehicle Region Fuel Type Drive Type
1998 - GMC Sonoma United States GAS RWD
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