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Manufacturer information. Check the part number and installation requirements for your vehicle.
Supplier details checked 2026-09-23 · Test catalog
Fits 1970-1974 Chevrolet Camaro and Pontiac Firebird with V8 engine. 2.50 inch Aluminized Steel - Aggressive to moderate sound
Flowmaster American Thunder Crossmember-Back Exhaust System
Specially Designed Slimline 50 Series Mufflers for Max Clearance
Does Not Include Header Reducers or Factory Manifold Downpipes
Includes 2.50-inch Polished 304 Stainless Steel Tips
Moderate to Aggressive Sound Exterior Exhaust Note
H-pipe Crossover for Maximum Power and Deep Tone
Includes Hangers and Hardware for Installation
Mandrel-bent 16-gauge Aluminized Steel Tubing
Crossmember-Back True Dual Exhaust System
Fits 1970-1974 Chevrolet Camaro and Pontiac Firebird with V8 engine.
Flowmaster 70-74 Camaro/Firebird American Thunder Crossmember-Back Exhaust System
7074 CAMAROFIREBIRD AMT
SYS 70-74 CAMARO/FIR
This American Thunder® exhaust system comes as a complete true dual Crossmember-Back exhaust for your 1970-1974 Chevrolet Camaro or Pontiac Firebird with V8 engine. These dual systems feature 2.50-inch mandrel-bent aluminized steel tubing for maximum performance, includes a built-in H-pipe/balance tube flowing into a pair of Slimline 50 Series® Delta Flow mufflers that deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit straight out under the rear bumper and are finished off with 2.50-inch angle-cut brushed stainless steel tips and includes all hangers and necessary hardware for installation. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. Covered by our 3-year Limited Warranty.
SYS 70-74 CA
