Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.
Features:
- Tuned-length primary tubes for better performance
- Mandrel-bent tubing for smooth exhaust flow
- Light weight & sturdy 16 gauge tubing
- Mandrel-formed Power Plenum collector for low back pressure
- Sturdy, leak-tested O-Ring port seals
- Engineered for a precision fit
- Designed for easy, trouble-free installation
- Includes all mounting hardware and premium gaskets
- Works with air conditioning, automatic and manual transmission with floor shifters
Will not work with Powerglide transmissions on Chevelles.
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
Installation Notes:
Will not work with Powerglide transmissions on Chevelles.
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
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 |
Bel Air |
1971 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Bel Air |
1972 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Bel Air |
1973 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Bel Air |
1974 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Biscayne |
1971 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Biscayne |
1972 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Caprice |
1971 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Caprice |
1972 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Caprice |
1973 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Caprice |
1974 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Impala |
1971 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Impala |
1972 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Impala |
1973 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Impala |
1974 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
| Chevrolet |
Townsman |
1972 |
7.4L / 454 / V8 |
Standard Header; Primary Tube Coll. Size 1.75x3 in.; w/o A.I.R. Tubes; Modify Stock Exh. To Retain Cat. Converter; Not Legal For Street Use; |
