Doug's Headers D665-R Shorty Header, 1-5/8 In, 64-73 Ford Mustang, Raw
- 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.
Doug's PASSENGER CAR HEADERS Raw SteelHeader 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
- Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
- Heavy 16 gauge tubing...longer life
- Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing
Application1964-1965 Ford Mustang 4.3L/260 V8
1964-1968 Ford Mustang 4.7L/289 V8
1968-1973 Ford Mustang 5L/302 V8
1969-1973 Ford Torino 5L/302 V8
1967-1968 Mercury Cougar 4.7L/289 V8
1968-1971 Mercury Cougar 5L/302 V8
- Doug's Headers D665-R 1 5/8" 4-Tube Shorty Header Ford Mustang Small Block Ford 64-73 Raw Steel
- Shorty Design - Raw Steel
- Collector: 3
- Port: SAP
- Primary: 1 5/8
- Use 65-66 Non Hi-Po V8 clutch equalizer bar and 66.5 or later frame brackets
- Lakewood bell housings require clearancing
- Use C5ZZ16A052E export brace if shock mount ctr. to ctr.less than 33 3/4 in.
- With A/c
- For Off-Road Use Only
- with Floor Shifter
More Like This
Doug's Headers D665-B Shorty Header, 1-5/8 In, 64-73 Ford Mustang, CC
Doug's Headers D665 Shorty Header, 1-5/8 In, 64-73 Mustang, CC
Doug's Headers D305-R Shorty Header, 1-5/8 In, 1964-94 GM, Raw
Doug's Headers D668-R Full Length Header, 1-5/8 In, 64-73 Mustang, Raw
Doug's Headers D690YS-R Tri-Y Header, 1-5/8 In, 64-70 Mustang, Raw
Doug's Headers D690YA-R Tri-Y Header, 1-5/8 In, 64-70 Mustang, Raw
Doug's Headers D308-R Full Length Header, 1-5/8 In, 1964-89 GM, Raw
Doug's Headers D304-R 4-Tube Shorty Header, 1-5/8 In, 1964-94 GM
Big Block Chevy Weld Up Header Kit, 2 In Primary, 3.5 In Collector
Speedway Flathead Ford V8 Center Dump Headers, Raw Finish
Q & A
Whether you’re looking for performance improvements or heat reduction, if you decide to wrap your headers, we'll show you the benefits and possible precautions to take before you wrap your exhaust.