Flowmaster 86-91 Chevrolet Camaro/Pontiac Firebird 3.0in. American Thunder Cat-Back Exhaust System

For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides. This dual out American Thunder cat-back exhaust system is the perfect choice with 3.00-inch mandrel-bent aluminized steel inlet tube flowing into a large case 80 Series Cross-flow performance muffler for a deep powerful sound. The system uses the factory hanger locations for an easy installation and features dual 3.00-inch mandrel-bent tailpipes exiting out the back and are finished off with dual 3.00-inch polished stainless steel tips for a muscular look and sound. American Thunder systems deliver a moderate to aggressive exterior tone with a mild-moderate interior tone and are best suited for the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Comes with our 3-year Limited Warranty. 1986-1991 Chevrolet Camaro and Pontiac Firebird with 5.0L or 5.7L Engine using 3.00-inch Flanged Catalytic Converter. - Moderate sound Fits 1986-1991 Chevrolet Camaro and Pontiac Firebird with 5.0L or 5.7L engine using 3.00-inch flanged catalytic converters.

• Includes Hangers and Hardware for an Easy Installation
• Mandrel-bent 16-gauge Aluminized Steel Tubing
• For 3.00-inch Flanged Catalytic Converters
• 80 Series Crossflow Performance Muffler
• Dyno Tuned for Maximum Performance
• Uses the Factory Hanger Locations
• Moderate Exterior Exhaust Tone
• Mild Interior Tone
• Easy Installation

Bring a deeper, more powerful exhaust note and improved performance to your classic F-body with the Flowmaster 17233 American Thunder dual-out cat-back exhaust system. Designed for 1986-1991 Chevrolet Camaro and Pontiac Firebird models equipped with a 5.0L or 5.7L engine and 3.00-inch flanged catalytic converters, this system delivers the traditional appearance of a dual exhaust setup with the proven performance of Flowmaster engineering. It is tuned for a moderate exterior tone and mild interior sound, making it a practical choice for enthusiasts who want their vehicle’s performance to be heard without excessive cabin volume.
The Flowmaster 17233 system uses mandrel-bent, 16-gauge aluminized steel tubing to maintain smooth exhaust flow through the large-case 80 Series Crossflow performance muffler. Dual 3.00-inch tailpipes exit at the rear and are finished with polished stainless steel tips for a clean, muscular appearance. Dyno-tuned construction helps support improved throttle response, power, and fuel mileage while preserving dependable street performance.
Installation is designed to be straightforward, using the factory hanger locations for a secure fit. The kit includes the necessary hangers and hardware, helping simplify installation without extensive modifications. The aluminized steel construction is suited for long-term use, while the polished stainless steel tips provide a durable finishing touch. The Flowmaster American Thunder system is backed by a 3-year limited warranty. Professional installation is recommended, and compatibility should be confirmed with the vehicle’s catalytic converter configuration before purchase.

Features:

• Brand: Flowmaster

• Part Number: 17233

• Application: Fits 1986-1991 Chevrolet Camaro and Pontiac Firebird with a 5.0L or 5.7L engine

• Compatibility: Designed for vehicles using 3.00-inch flanged catalytic converters

• Muffler: Large-case 80 Series Crossflow performance muffler

• Tubing: Mandrel-bent 16-gauge aluminized steel construction

• Tailpipes: Dual mandrel-bent tailpipes with polished stainless steel exhaust tips

• Sound: Moderate exterior tone with a mild interior tone

• Installation: Uses factory hanger locations and includes hangers and hardware

• Performance: Dyno-tuned to support improved throttle response, power, and fuel mileage

• Warranty: Backed by a 3-year limited warranty

Fitment:
Chevrolet Camaro Base 1988
Chevrolet Camaro Berlinetta 1986
Chevrolet Camaro Iroc-Z 1986
Chevrolet Camaro Iroc-Z 1987
Chevrolet Camaro Iroc-Z 1988
Chevrolet Camaro Iroc-Z 1989
Chevrolet Camaro Iroc-Z 1990
Chevrolet Camaro LT 1987
Chevrolet Camaro RS 1989
Chevrolet Camaro RS 1990
Chevrolet Camaro RS 1991
Chevrolet Camaro Sport 1986
Chevrolet Camaro Sport 1987
Chevrolet Camaro Z28 1986
Chevrolet Camaro Z28 1987
Chevrolet Camaro Z28 1991
Pontiac Firebird Base 1986
Pontiac Firebird Base 1987
Pontiac Firebird Base 1988
Pontiac Firebird Base 1989
Pontiac Firebird Base 1990
Pontiac Firebird Base 1991
Pontiac Firebird Formula 1989
Pontiac Firebird Formula 1990
Pontiac Firebird Formula 1991
Pontiac Firebird S/E 1986
Pontiac Firebird Trans Am 1986
Pontiac Firebird Trans Am 1987
Pontiac Firebird Trans Am 1988
Pontiac Firebird Trans Am 1989
Pontiac Firebird Trans Am 1990
Pontiac Firebird Trans Am 1991
Pontiac Firebird Trans Am GTA 1989
Pontiac Firebird Trans Am GTA 1990
Pontiac Firebird Trans Am GTA 1991