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$649.99
Doug's Headers D311 Shorty Header, 1-7/8 In, 55-57 Chevy LS1, CC
Doug's Headers D311 Shorty Header, 1-7/8 In, 55-57  Chevy LS1, CC

Doug's Headers D311 Shorty Header, 1-7/8 In, 55-57 Chevy LS1, CC

265 Chevy Small Block V8, 283 Chevy Small Block V8, Shorty Header Tube Type, Steel, Silver

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Doug's Headers D311 Shorty Header, 1-7/8 In, 55-57  Chevy LS1, CC
Doug's Headers D311 Shorty Header, 1-7/8 In, 55-57 Chevy LS1, CC
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We estimate this item will ship on or before July 24th.
Part # 447D311
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$649.99
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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.

Details

Header Tube Type:
Shorty
Finish:
Metallic Ceramic Coating
Flange Style:
Oval Port
Primary Tube Diameter:
1-7/8"
Material Type:
Steel
Color:
Silver
MFG. Part #:
D311
Collector Diameter:
3 Inch
Hardware Included:
Yes
Gasket(s) Included:
Yes
Sold in Quantity:
Pair
GTIN Code:
694342512439

Info

Doug's PASSENGER CAR HEADERS Mid Length Metallic Ceramic CoatedHeader 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
  • Mid length headers provide improved groungd clearance for popular muscle cars and street rods
  • Heavy 16 gauge tubing... longer life
  • Tubes are pre-polished to remove scratches and the header isfinished 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)

Application

1955-1957 Chevrolet Bel Air 4.3L/265 V8
1957 Chevrolet Bel Air 4.6L/283 V8
1955-1956 Chevrolet Corvette 4.3L/265 V8
1957 Chevrolet Corvette 4.6L/283 V8

Notes

  • Doug's Headers D311 1 7/8" 4-Tube Shorty Header Chevrolet Passenger Car/Wagon LS1 55-57 Metallic Ceramic Coating
  • Shorty Design - Ceramic Coated
  • Collector: 3
  • Port: SAP
  • Primary: 1 7/8
  • exc. states w/Calif. emission stds
  • LS1/LS6 eng. Must use a LS1 oil pan
  • O2 bungs on collectors
  • Must use Street and Performance billet adaptors
  • along W/D and P Classis Chevy frame stands
  • Fits 605 steering
  • with Column Shift
  • with A/C
  • For Off-Road Use Only
  • with Floor Shifter
Some parts are not legal for use in California or other states with similar laws/regulations

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