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Doug's Headers 1963-67 Chevy II Small Block 1 5/8" TRI-Y Header D367Y

Doug's Headers 1963-67 Chevy II Small Block 1 5/8" TRI-Y Header D367Y
Doug's Headers 1963-67 Chevy II Small Block 1 5/8" TRI-Y Header D367Y
from $1,645.85 st

Available Options

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Model: 5124740
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market.
Features:
  • 3/8" Thick machined flanges to prevent warping
  • Precision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower
  • Heavy duty 16-gauge tubing for long life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating
About Doug's Headers

Doug's Headers are a fixture in the motorsports aftermarket, pioneering quality muscle car performance headers for decades. Unlike the competition, Doug's Headers prides ourselves on superior design detail resulting in a hassle-free installation for any application.

Downloads:

Download Name File Size
D367Y.pdf375.52KB
D367Y-B.pdf375.52KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine Fitment Notes
Chevrolet Chevy II 1963 4.6L / 283 / V8 Fits most angle plug heads.
Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
Will not fit with 168 tooth flywheels or kickout aftermarket Oil Pans.
Will work w/column shift using "Chevy 2 Only" conversion kit part number 01036
Tri-Y
Chevrolet Chevy II 1964 4.6L / 283 / V8 Fits most angle plug heads.
Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
Will not fit with 168 tooth flywheels or kickout aftermarket Oil Pans.
Will work w/column shift using "Chevy 2 Only" conversion kit part number 01036
Tri-Y
Chevrolet Chevy II 1965 5.4L / 327 / V8
5.3L / 327 / V8
4.6L / 283 / V8		 Fits most angle plug heads.
Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
Will not fit with 168 tooth flywheels or kickout aftermarket Oil Pans.
Will work w/column shift using "Chevy 2 Only" conversion kit part number 01036
Tri-Y
Chevrolet Chevy II 1966 5.4L / 327 / V8
5.3L / 327 / V8
4.6L / 283 / V8		 Fits most angle plug heads.
Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
Will not fit with 168 tooth flywheels or kickout aftermarket Oil Pans.
Will work w/column shift using "Chevy 2 Only" conversion kit part number 01036
Tri-Y
Chevrolet Chevy II 1967 5.3L / 327 / V8
4.6L / 283 / V8		 Fits most angle plug heads.
Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
Will not fit with 168 tooth flywheels or kickout aftermarket Oil Pans.
Will work w/column shift using "Chevy 2 Only" conversion kit part number 01036
Tri-Y

Specifications:

Collector Attachment 3-Bolt Flange
Collector Diameter 2.5 IN
Collector Port Diameter 2.5 IN
Cylinder Head Port Shape Oval
Design Tri-Y
Flange Thickness 0.375 IN
Gasket Or Seal Included Yes
Gaskets Included Yes
Grade Type Performance
Header Style Tri-Y
Mounting Hardware Included Yes
Oxygen Sensor Port No
Part Type Exhaust Header
Port Shape Oval
Primary Tube Outside Diameter 1.625 IN
Proposition 65 www.P65Warnings.ca.gov
Tube Wall Thickness 16 GU
Warranty Time 24 Months

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