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Flowmaster introduces their new stainless steel American Thunder cat-back system for the 1975-1979 Chevrolet Corvettes with 5.7L, V8 engines. This fully mandrel bent 2.50 system features 50 Series Delta Flow mufflers and 3.00 polished stainless steel tips. As an American Thunder system it will typically produce a moderate interior and exterior sound level with all of the performance benefits that you would expect from Flowmaster. Constructed in durable 409S stainless steel, the system is covered by Flowmaster's Lifetime Limited Warranty. All necessary parts and hardware are included for a great fitting installation. Note: To complete the system for these applications, Flowmaster also offers a direct fit converter, part # 2010036 (49 state legal), and manifold Y-pipe # 81087.
| 2WD/4WD | RWD |
| Bullet Point #1 | Stainless Steel Construction |
| Bullet Point #2 | Dyno Tuned For Maximum Performance |
| Bullet Point #3 | Patented Delta Flow Technology |
| Bullet Point #4 | Lifetime Limited Warranty |
| Exhaust Series | American Thunder |
| Exhaust Type | Dual |
| Exit Position | Dual Rear Exit |
| Exit Style | Turn Down |
| Heat Shield | No |
| Heat Shield Attached | No |
| Inlet Diameter | 2.5 |
| Inlet Diameter (in) | 2.5 |
| Inlet Inside Diameter (in.) | 2.5 |
| Material | Stainless Steel |
| Muffler Count | 2 |
| Muffler Part Number | Kit Only |
| Muffler Quantity | 2 |
| Muffler Series | 50 Series Delta Flow |
| Outlet Diameter | 2.5 in. |
| Outlet Diameter (in) | 2.5 |
| Outlet Outside Diameter (in.) | 3 |
| Single Dual | Dual |
| Single or Dual | Dual |
| Sound Level | Moderate Sound |
| System Type | Cat-back System |
| System Type | Cat Back |
| Title | Flowmaster 817662 Cat-Back System 409S - Dual Rear Exit - American Thunder - Moderate Sound |
| Tubing Diameter | 2.50 in. |
| Tubing Diameter (in) | 2.5 |
*Some manufacturer restrictions apply.
Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.
An upgraded exhaust system is one of the easiest modifications that offers an immediate, noticeable performance improvement. Whether you’re cruising an M3 or modding a diesel truck, an upgraded exhaust will open up the restrictive factory system, allowing your engine to breathe better and deliver peak power! From lighter weight exhaust headers to improved cat-back systems, to better sounding mufflers, modifying your exhaust setup is a great place to express the character of your ride in a unique and cost effective way. Whatever you’re looking for in a modified exhaust system, we can provide the absolute best systems to make your vision a reality.
Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.
The best modders use Wheelwell to build their dream rides.
