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Doug's Headers D336 Full Length Header, 1-3/4 In, 78-88 GM, CC
Doug's Headers D336 Full Length Header, 1-3/4 In, 78-88 GM, CC

Doug's Headers D336 Full Length Header, 1-3/4 In, 78-88 GM, CC

Chevy Small Block V8, Pontiac V8

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Doug's Headers D336 Full Length Header, 1-3/4 In, 78-88 GM, CC
Doug's Headers D336 Full Length Header, 1-3/4 In, 78-88 GM, CC
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We estimate this item will ship on or before May 30th.
Part # 447D336
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 2 business days for Dougs Headers to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.


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Doug's PASSENGER CAR HEADERS Long Tube Metallic Ceramic Coated

3/8" Thick machined flanges... no warping
• CNC mandrel bent tubes... accurate fit & better flow
• Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
• Heavy 16 gauge tubing... longer life
• Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees

Installation Instructions (PDF)


1979-1982 Chevrolet El Camino 4.4L/267 V8
1978-1984 Chevrolet El Camino 5.7L/350 V8
1978-1987 Chevrolet El Camino 5L/305 V8
1979-1982 Chevrolet Malibu 4.4L/267 V8
1978-1983 Chevrolet Malibu 5.7L/350 V8
1978-1983 Chevrolet Malibu 5L/305 V8
1979-1982 Chevrolet Monte Carlo 4.4L/267 V8
1982-1984 Chevrolet Monte Carlo 5.7L/350 V8
1978-1988 Chevrolet Monte Carlo 5L/305 V8
1978-1981 Oldsmobile Cutlass 5.7L/350 V8
1978-1987 Oldsmobile Cutlass 5L/305 V8
1982-1984 Pontiac Bonneville 5.7L/350 V8
1983-1986 Pontiac Bonneville 5L/305 V8
1980-1981 Pontiac Grand Prix 4.3L/265 V8
1978-1980 Pontiac Grand Prix 4.9L/301 V8
1981-1984 Pontiac Grand Prix 5.7L/350 V8
1978-1987 Pontiac Grand Prix 5L/305 V8


  • D336 1 3/4" 4-Tube Full Length Header Chevrolet 78-83 Malibu 78-87 El Camino 78-88 Monte Carlo Oldsmobile 78-88 Cutlass Supreme 78-84 Calais 78-83 Cruiser Pontic 78-87 Grand Prix Bonneville 82-86 265-400 Chevrolet Engine Met Ceramic Coating
  • Ceramic Coated
  • Emissions: No air inj
  • Primary: 1 3/4"
  • Fits D-Port heads incl. ZZ4 crate eng
  • use left side AC bracket H7608
  • vehicles W/ short compressors can use stock bracket
  • Use non-shell motor mounts
  • removal/modification of locking steering column reqd.
  • with Floor Shifter
  • with A/C
Some parts are not legal for use in California or other states with similar laws/regulations

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