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$995.19
$659.99
Doug's Headers D581-R Full Length Header 1-7/8In, 70-81 Firebird, Raw
Doug's Headers D581-R Full Length Header 1-7/8In, 70-81 Firebird, Raw

Doug's Headers D581-R Full Length Header 1-7/8In, 70-81 Firebird, Raw

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Doug's Headers D581-R Full Length Header 1-7/8In, 70-81 Firebird, Raw
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Doug's Headers D581-R Full Length Header 1-7/8In, 70-81 Firebird, Raw
Doug's Headers D581-R Full Length Header 1-7/8In, 70-81 Firebird, Raw
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Dougs Headers estimates this item will ship on or before August 18th.
Part # 447D581R
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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.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

MFG. Part #:
D581-R
GTIN Code:
694342509897

Info

Doug's PASSENGER CAR HEADERS Long Tube Raw Steel Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

  • 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 left unfinished (raw steel) for individual customizing

Application

1970-1979 Pontiac Firebird 5.7L/350 V8
1970-1979 Pontiac Firebird 6.6L/400 V8
1977-1979 Pontiac Firebird 6.6L/403 V8
1971-1976 Pontiac Firebird 7.5L/455 V8

Notes

  • Doug's Headers D581-R 1 7/8" 4-Tube Full Length Header Pontiac Firebird 326-455 70-81 Raw Steel
  • Raw Steel
  • Collector: 3 1/2
  • Port: RD
  • Primary: 1 7/8
  • exc. states w/Calif. emission stds
  • Fits Edelbrock Performer
  • RAM-Air
  • Super Duty and H.O. heads only
  • fits W/Milodon oil pans 30355
  • 31660
  • 31665
  • removal/modification of locking steering column reqd.
  • with Floor Shifter
  • with A/C
  • For Off-Road Use Only

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