Flowtech Headers are the perfect combination of quality and value. These Tri-Y style headers fit the popular 1965-1970 Ford 260/289/302 V8 engines. These Tri-Y style headers were originally designed for 1965-1966 Shelby GT350 Mustangs with a 289HiPo V8, 4-speed manual transmission, and manual steering.
Over the years, Ford enthusiasts have used these headers in dozens of other vehicles to get that classic Shelby sound and performance.
See Installation Notes for additional information regarding fitment details regarding these headers.
Features:
- Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing
- Heavy duty 16-gauge tubing for increased strength and durability
- 1-1/2” diameter primary tubes, 1-3/4” diameter secondary tubes for increased exhaust flow increasing performance and improving throttle response
- 2-1/2” collector for maximum strength and exhaust flow
- 3/8” thick header flange for a leak-free seal and maximum strength
- Premium aluminum header gaskets included
- Available in a high heat resistant black paint or polished finish
Please read the following information regarding fitment of these headers:
- Attempt to install in any other application WILL require some modification
- These headers will not fit vehicles utilizing an FMX, C-6, or AOD automatic transmission
- May not fit some vehicles utilizing a C-4 transmission with 164-tooth bellhousing. Those using a 157-tooth bellhousing with require some clearancing on RH side of bell
- Will NOT work on 351W motors. (Due to taller and wider engine dimensions)
- Will not work with GT40-P cylinder heads
- Headers will work with 10" or 10.5" clutch, use of a 1968-newer bellhousing will require clearance on LH side of bellhousing
- 1969-1970 model vehicles may require additional clearance for steering box
- Use of these headers on a non-HiPo model will require extra clearance for clutch linkage
Installation Notes:
Please read the following information regarding fitment of these headers:
- Attempt to install in any other application WILL require some modification
- These headers will not fit vehicles utilizing an FMX, C-6, or AOD automatic transmission
- May not fit some vehicles utilizing a C-4 transmission with 164-tooth bellhousing. Those using a 157-tooth bellhousing with require some clearancing on RH side of bell
- Will NOT work on 351W motors. (Due to taller and wider engine dimensions)
- Will not work with GT40-P cylinder heads
- Headers will work with 10" or 10.5" clutch, use of a 1968-newer bellhousing will require clearance on LH side of bellhousing
- 1969-1970 model vehicles may require additional clearance for steering box
- Use of these headers on a non-HiPo model will require extra clearance for clutch linkage
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 |
Submodel |
Years |
Engine |
| Ford |
Mustang |
Base |
1965 |
4.3L / 260 / V8
4.7L / 289 / V8 |
| Ford |
Mustang |
Base |
1966 |
4.7L / 289 / V8 |
| Ford |
Mustang |
Base |
1967 |
4.7L / 289 / V8 |
| Ford |
Mustang |
Base |
1968 |
4.7L / 289 / V8
5.0L / 302 / V8 |
| Ford |
Mustang |
Base |
1969 |
5.0L / 302 / V8 |
| Ford |
Mustang |
Base |
1970 |
5.0L / 302 / V8 |
