$111 Off

Doug's Headers D564 Full Length Header, 1-3/4 In, 64-67 GTO, CC

$111 Off

Doug's Headers D564 Full Length Header, 1-3/4 In, 64-67 GTO, CC
Doug's Headers

|

#447D564

Doug's Headers D564 Full Length Header, 1-3/4 In, 64-67 GTO, CC

  • Specifically designed to fit the 64-67 GTO
  • They have 3/8" thick machined flanges that will not warp over time
  • Built with CNC mandrel tubes for an accurate fit and better flow
See More

$1,105.22

/set

Factory Shipped

$1,215.74

Save $110.52


Quantity

Need Help? Call to Order

Add to a list

Share

Select a vehicle and engine to verify Fitment

Select Vehicle

Select Engine

Product Summary

Long Tube Header Tube Type, D-port Exhaust Port Shape

  • Specifically designed to fit the 64-67 GTO
  • They have 3/8" thick machined flanges that will not warp over time
  • Built with CNC mandrel tubes for an accurate fit and better flow
  • Engineered to reduce backpressure and increases higher RPM horsepower
  • Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier Coating
See more details

Key Specs

MFG. Part #D564
Header Tube TypeLong Tube
Exhaust Port ShapeD-port
Flange StyleStandard
Primary Tube Diameter1-3/4"
See more specs

Need To Know

Need help?

855.313.9176
View the Help Center

Quick and Easy Returns

Return Policy

Doug's Headers D564 Details

Doug's PASSENGER CAR HEADERS Long Tube 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
  • 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 isfinished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees
  • Doug's Headers D564 1 3/4" 4-Tube Full Length Header Pontiac GTO 326-455 64-67 Metallic Ceramic Coating
  • Ceramic Coated
  • Collector: 3
  • Port: D
  • Primary: 1 3/4
  • exc. states w/Calif. emission stds
  • fits W/Milodon oil pans 30355
  • 31660
  • 31665
  • removal/modification of locking Strg column reqd
  • factory heads w/o end bolt holes must be drilled and tapped
  • Use 64-65 Z-Bar 9776376
  • removal/modification of locking Strg column req
  • with Floor Shifter
  • with A/C
  • For Off-Road Use Only
  • Doug's Headers D564 1 3/4" 4-Tube Full Length Header Pontiac GTO 326-455 64-67 Metallic Ceramic Coating
  • Ceramic Coated
  • Collector: 3
  • Port: D
  • Primary: 1 3/4
  • exc. states w/Calif. emission stds
  • fits W/Milodon oil pans 30355
  • 31660
  • 31665
  • removal/modification of locking Strg column reqd
  • factory heads w/o end bolt holes must be drilled and tapped
  • Use 64-65 Z-Bar 9776376
  • removal/modification of locking Strg column req
  • with Floor Shifter
  • with A/C
  • For Off-Road Use Only

Application

1964-1966 Pontiac GTO 6.4L/389 V8
1967 Pontiac GTO 6.6L/400 V8
1964-1967 Pontiac LeMans 5.3L/326 V8
1964-1967 Pontiac Tempest 5.3L/326 V8
1967 Pontiac Tempest 7L/428 V8

Charts

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CA Prop 65
CARB warning

Doug's Headers D564 Specifications

KEY SPECS
MFG. Part #D564
BrandDoug's Headers
Header Tube TypeLong Tube
Exhaust Port ShapeD-port
Flange StyleStandard
Primary Tube Diameter1-3/4"
Material TypeSteel
ColorSilver
Weld-UpNo
Collector Diameter3 Inch
FinishCeramic Coated
Hardware IncludedYes
Gasket(s) IncludedYes
GENERAL
Sold in QuantityPair
GTIN Code694342509781

Questions & Answers

Be the first to ask a question.

Fitment

  • 389 Pontiac V8

  • 389 Pontiac V8

  • 389 Pontiac V8

  • 389 Pontiac V8

  • 389 Pontiac V8

  • 389 Pontiac V8

  • 389 Pontiac V8

  • 389 Pontiac V8

Customer Impersonation Script