Doug's Headers 1964-77 Ford/Mercury Small Block 1 5/8" TRI-Y Header D665

Name: Doug's Headers 1964-77 Ford/Mercury Small Block 1 5/8" TRI-Y Header D665
Brand: Doug's Headers
SKU: 5124767
Price: 1506.2136902010277 CAD
Availability: OnlineOnly

from $1,506.21 st

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Model: 5124767

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Description Vehicle Fitment Downloads Specifications Reviews (0) Product Q&A Related Products

Mid-Length Headers, often called Clipsters, are engineered to provide superior performance gains over Manifold Replacements or Block Hugger style headers. These headers enhance your vehicles's horsepower and torque while preserving ground clearance for cars with a lowered stance and trucks where long tube headers may hang to low.

Features:

3/8" Thick machined flanges to prevent warping
CNC mandrel bent tubes for ensuring accurate fit and optimal flow
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
D665.pdf	368.77KB
D665-B.pdf	368.77KB

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
Ford	Fairlane	1966	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Fairlane	1967	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Fairlane	1968	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Fairlane	1969	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Fairlane	1970	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Falcon	1966	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Falcon	1967	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Falcon	1968	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Falcon	1969	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Falcon	1970	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1970	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1971	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1972	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1973	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1974	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1975	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1976	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Maverick	1977	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1964	4.7L / 289 / V8 4.3L / 260 / V8	Must use 66 1/2 or later motor mount frame brackets (approx. 1" higher than 65/early 66 style) Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1965	4.7L / 289 / V8 4.3L / 260 / V8	Must use 66 1/2 or later motor mount frame brackets (approx. 1" higher than 65/early 66 style) Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1966	4.7L / 289 / V8	Must use 66 1/2 or later motor mount frame brackets (approx. 1" higher than 65/early 66 style) Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1967	4.7L / 289 / V8	Must use 66 1/2 or later motor mount frame brackets (approx. 1" higher than 65/early 66 style) Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1968	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y Must use 66 1/2 or later motor mount frame brackets (approx. 1" higher than 65/early 66 style)
Ford	Mustang	1969	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1970	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1971	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1972	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Mustang	1973	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1966	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1967	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1968	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1969	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1970	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1971	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1972	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1973	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Ranchero	1974	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Torino	1968	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Torino	1969	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Torino	1970	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Torino	1971	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Torino	1972	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Torino	1973	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Ford	Torino	1974	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Comet	1966	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Comet	1967	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Comet	1968	5.0L / 302 / V8 4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Comet	1969	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Cougar	1967	4.7L / 289 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Cougar	1968	4.7L / 289 / V8 5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Cougar	1969	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y
Mercury	Cougar	1970	5.0L / 302 / V8	Will not fit GT40 "P" heads. Tri-Y

Specifications:

Collector Attachment	3-Bolt Flange
Collector Diameter	3.0 IN
Collector Port Diameter	3.0 IN
Cylinder Head Port Shape	SAP
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	SAP
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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Doug's Headers 1964-77 Ford/Mercury Small Block 1 5/8" TRI-Y Header D665

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