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Doug's Headers  |  SKU: D306-B-BKLK

Mid-Length Headers for 64-77 GM F G/A Body 396-502 BBC 1-3/4in Primary D306-B

Regular price $844.55 USD
Shipping calculated at checkout.

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Please see description for full fitment notes!!!

Fitment

Warranty Information

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Description

Overview:

64-77 GM F, G, & A Body BBC Mid Black

Mid-Length Headers, often called Clipsters, are engineered to provide superior performance gains over Manifold Replacements or Block Hugger style headers. These headers enhance your vehicles's horsepower and torque while preserving ground clearance for cars with a lowered stance and trucks where long tube headers may hang to low. This fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.

Features:

  • 3/8" Thick machined flanges to prevent warping
  • CNC mandrel bent tubes for ensuring accurate fit and optimal flow
  • Heavy duty 16-gauge tubing for long life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating

Specs:

  • Brand: Doug's Headers
  • Collector Attachment: 3-Bolt Flange
  • Collector Diameter: 3.0 IN
  • Collector Port Diameter: 3.0 IN
  • Color: Black
  • Cylinder Head Port Shape: SAP
  • Design: Mid Length
  • EGT Port: No
  • Finish: Hi-Temp Black Coating
  • Flange Thickness: 0.375 IN
  • Gasket Or Seal Included: Yes
  • Gaskets Included: Yes
  • Grade Type: Performance
  • Header Material: Steel
  • Header Style: Mid Length
  • Material: Steel
  • Mounting Hardware Included: Yes
  • Oxygen Sensor Port: No
  • Port Shape: Round
  • Primary Tube Outside Diameter: 1.75 IN
  • Primary Tubing Diameter: 1.75 IN
  • Prop 65 (C, R or CR): CR
  • Prop 65 Yes/No: Yes
  • Sheen Level: Matte
  • Title: Doug's Mid Length Header 64-77 GM F, G, & A Body 396-502 BBC 1 3/4" Primary 3" Collector Black Hi Temp Coated D306-B
  • Tube Wall Thickness: 16 GU
  • Part Number: D306-B

Applications:

  • 1963-1969 Chevrolet Biscayne 427 CID
  • 1965-1969 Chevrolet Biscayne 396 CID
  • 1970-1972 Chevrolet Biscayne 454 CID
  • 1970-1972 Chevrolet Biscayne 402 CID
  • 1968-1969 Chevrolet C10 Pickup 396 CID
  • 1970-1972 Chevrolet C10 Pickup 402 CID
  • 1973-1974 Chevrolet C10 Pickup 454 CID
  • 1968-1969 Chevrolet C20 Pickup 396 CID
  • 1970-1972 Chevrolet C20 Pickup 402 CID
  • 1973-1974 Chevrolet C20 Pickup 454 CID
  • 1968-1968 Chevrolet Chevy II 396 CID
  • 1968-1969 Chevrolet Chevelle 396 CID
  • 1970-1973 Chevrolet Chevelle 454 CID
  • 1970-1972 Chevrolet Chevelle 402 CID
  • 1965-1969 Chevrolet Bel Air 396 CID
  • 1966-1969 Chevrolet Bel Air 427 CID
  • 1970-1974 Chevrolet Bel Air 454 CID
  • 1970-1972 Chevrolet Bel Air 402 CID
  • 1975-1980 Chevrolet C10 454 CID
  • 1968-1969 Chevrolet C10 Suburban 396 CID
  • 1970-1972 Chevrolet C10 Suburban 402 CID
  • 1973-1980 Chevrolet C10 Suburban 454 CID
  • 1975-1986 Chevrolet C20 454 CID
  • 1968-1969 Chevrolet C20 Suburban 396 CID
  • 1970-1972 Chevrolet C20 Suburban 402 CID
  • 1973-1986 Chevrolet C20 Suburban 454 CID
  • 1967-1969 Chevrolet Camaro 396 CID
  • 1969-1969 Chevrolet Camaro 427 CID
  • 1970-1972 Chevrolet Camaro 402 CID
  • 1966-1969 Chevrolet Caprice 427 CID
  • 1966-1969 Chevrolet Caprice 396 CID
  • 1970-1974 Chevrolet Caprice 454 CID
  • 1970-1972 Chevrolet Caprice 402 CID
  • 1968-1969 Chevrolet El Camino 396 CID
  • 1970-1975 Chevrolet El Camino 454 CID
  • 1970-1972 Chevrolet El Camino 402 CID
  • 1965-1969 Chevrolet Impala 396 CID
  • 1966-1969 Chevrolet Impala 427 CID
  • 1970-1974 Chevrolet Impala 454 CID
  • 1971-1972 Chevrolet Impala 402 CID
  • 1973-1975 Chevrolet Malibu 454 CID
  • 1970-1975 Chevrolet Monte Carlo 454 CID
  • 1970-1972 Chevrolet Monte Carlo 402 CID
  • 1969-1969 Chevrolet Nova 396 CID
  • 1970-1972 Chevrolet Nova 402 CID
  • 1970-1971 Chevrolet Nova 454 CID
  • 1968-1969 GMC C15/C1500 Pickup 396 CID
  • 1970-1972 GMC C15/C1500 Pickup 402 CID
  • 1973-1974 GMC C15/C1500 Pickup 454 CID
  • 1968-1969 GMC C15/C1500 Suburban 396 CID
  • 1970-1972 GMC C15/C1500 Suburban 402 CID
  • 1973-1974 GMC C15/C1500 Suburban 454 CID
  • 1968-1969 GMC C25/C2500 Pickup 396 CID
  • 1970-1972 GMC C25/C2500 Pickup 402 CID
  • 1973-1974 GMC C25/C2500 Pickup 454 CID
  • 1968-1969 GMC C25/C2500 Suburban 396 CID
  • 1970-1972 GMC C25/C2500 Suburban 402 CID
  • 1973-1974 GMC C25/C2500 Suburban 454 CID
  • 1975-1978 GMC C15 454 CID
  • 1975-1978 GMC C15 Suburban 454 CID
  • 1975-1978 GMC C25 454 CID
  • 1975-1978 GMC C25 Suburban 454 CID
  • 1971-1975 GMC Sprint 454 CID
  • 1971-1975 GMC Sprint 402 CID

Emissions:

  • This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.

Instructions:

Fitment Notes:

  • Not recommended for Gen-6 502cid engines with aluminum heads. Will not fit 67-69 Camaro or 68-74 Nova with Factory Saginaw 800 power steering box. without Catalytic Converter
  • Big block frame stands and motor mounts required for proper fit.
  • Requires removal or modification of locking steering columns if equipped.
  • with Floor Shifter
  • Will work with 4L60E and 4L80E transmissions.

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