Flowmaster American Thunder Crossmember-Back Exhaust System for 21 vehicles
Part # 817409
- H-pipe Crossover for Maximum Power and Deep Tone
- Super 40 Series Mufflers for Deep Powerful Sound
- Mandrel-bent 16-gauge Stainless Steel Tubing
- Includes Hangers and Hardware for Installation
- Aggressive Exterior Exhaust Tone
- Crossmember-Back True Dual Exhaust System
- Does Not Include Header Reducers or Downpipes for Factory Manifolds
- Lifetime Limited Warranty
Description
This American Thunder® exhaust system comes as a complete true dual Crossmember-Back exhaust for your 1968-1972 GM A-body with a V8 engine. These dual exhaust systems feature 2.50-inch mandrel-bent stainless steel tubing for maximum performance, includes a built-in H-pipe/balance tube flowing into a pair of large case Super 40® mufflers that deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit at a slight angle down under the rear bumper for a strong muscular look. The system includes all hangers and necessary hardware for installation. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage and is covered by our Lifetime Limited Warranty.
Specifications
| CARB (California) Compliant | Yes |
|---|---|
| Catalytic Converter Included | No |
| Catalytic Converter Quantity | 0 |
| Clamping Type | Flat Band |
| Clamps Included | Yes |
| Drive | 2WD |
| Exhaust Series | American Thunder |
| Exhaust Tip Connection | Clamp-On |
| Exhaust Tip Quantity | 0 |
| Exhaust Tip Shape | Round |
| Exit Style | Dual Out Rear |
| Finish | Natural |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Hangers Included | Yes |
| Heat Shield Included | No |
| Inlet Diameter | 2.50 in |
| Inlet Type | Weld-On |
| Main Piping Diameter | 2.50 in |
| Mounting Bracket Included | Yes |
| Muffler (Left) Body Height | 5.00 in |
| Muffler (Left) Body Length | 13.50 in |
| Muffler (Left) Body Width | 10.00 in |
| Muffler (Left) Type | Chambered |
| Muffler (Right) Body Height | 5.00 in |
| Muffler (Right) Body Length | 13.50 in |
| Muffler (Right) Body Width | 10.00 in |
| UPC / GTIN | 00700042024056 |
| Warranty | Manufacturer's Limited Lifetime Warranty |
| Year | Make | Model | Submodel | Engine | Note |
|---|---|---|---|---|---|
| 1970 - 1972 | Buick | GS | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Buick | GS 350 | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Buick | GS 400 | Base | 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Buick | GS 455 | Base, GSX | 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 - 1972 | Buick | GS 455 | Base | 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 | Buick | Skylark | Base, Custom | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1969 | Buick | Skylark | Base, Custom | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Buick | Skylark | 350, Base, Custom | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 | Buick | Skylark | Base, Custom | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1972 | Buick | Skylark | 350, Base, Custom | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Buick | Special | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Buick | Sportwagon | Base, Custom | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Buick | Sportwagon | Base | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 - 1972 | Buick | Sportwagon | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 | Chevrolet | Chevelle | 300, 300 Deluxe, Concours, Malibu, Nomad, Nomad Custom, SS 396 | 5.0L V8, 5.3L V8, 6.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1969 | Chevrolet | Chevelle | 300 Deluxe, Concours, Concours Estate, Greenbrier, Malibu, Nomad, SS 396 | 5.0L V8, 5.7L V8, 6.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Chevrolet | Chevelle | Base, Concours, Concours Estate, Greenbrier, Malibu, Nomad, SS 396, SS 454 | 5.0L V8, 5.7L V8, 6.6L V8, 7.4L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 - 1972 | Chevrolet | Chevelle | Base, Concours, Concours Estate, Greenbrier, Heavy Chevy, Malibu, Nomad, SS | 5.0L V8, 5.7L V8, 6.6L V8, 7.4L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 | Chevrolet | El Camino | Base, Custom, SS | 5.0L V8, 5.3L V8, 5.4L V8, 5.7L V8, 6.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1969 | Chevrolet | El Camino | Base, Custom, SS | 5.0L V8, 5.3L V8, 5.7L V8, 6.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Chevrolet | El Camino | Base, Custom, SS | 5.0L V8, 5.7L V8, 6.5L V8, 6.6L V8, 7.4L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 - 1972 | Chevrolet | El Camino | Base, Custom, SS | 5.0L V8, 5.7L V8, 6.6L V8, 7.4L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 - 1972 | Chevrolet | Monte Carlo | Base | 5.7L V8, 6.6L V8, 7.4L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 | GMC | Sprint | Base | 5.0L V8, 5.7L V8, 6.6L V8, 7.4L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1972 | GMC | Sprint | Base, Custom | 5.0L V8, 5.7L V8, 6.6L V8, 7.4L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Oldsmobile | 442 | Base | 6.6L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 - 1971 | Oldsmobile | 442 | Base | 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 | Oldsmobile | Cutlass | Base, S | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1969 | Oldsmobile | Cutlass | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Oldsmobile | Cutlass | Base | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 | Oldsmobile | Cutlass | Base, S | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1972 | Oldsmobile | Cutlass | Base, Cruiser, S | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1970 | Oldsmobile | Cutlass Supreme | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 - 1972 | Oldsmobile | Cutlass Supreme | Base | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Oldsmobile | F85 | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Oldsmobile | F85 | Base | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 | Oldsmobile | F85 | Base | 5.7L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1972 | Oldsmobile | F85 | Base | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Oldsmobile | Vista Cruiser | Base | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 - 1972 | Oldsmobile | Vista Cruiser | Base | 5.7L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 | Pontiac | Beaumont | Base | 5.0L V8, 5.3L V8, 5.7L V8, 6.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1969 | Pontiac | Beaumont | Base | 5.0L V8, 5.7L V8, 6.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1969 | Pontiac | Grand Prix | Base | 6.6L V8, 7.0L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 - 1972 | Pontiac | Grand Prix | Base | 6.6L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Pontiac | GTO | Base | 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 - 1971 | Pontiac | GTO | Base, The Judge | 6.6L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1972 | Pontiac | GTO | Base | 6.6L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 | Pontiac | LeMans | Base | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1969 | Pontiac | LeMans | Base, Safari | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Pontiac | LeMans | Base, Safari, Sport | 5.7L V8, 6.6L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1971 | Pontiac | LeMans | Base, Sport, T37 | 5.7L V8, 6.6L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1972 | Pontiac | LeMans | Base, Luxury, Sport | 5.7L V8, 6.6L V8, 7.5L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1968 - 1969 | Pontiac | Tempest | Base, Custom, Safari | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |
| 1970 | Pontiac | Tempest | Base, GT | 5.7L V8, 6.6L V8 | Aggressive sound; Super 40 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes; Small Block Chevy Swap; Big Block Chevy Swap; LS Swap; LT Swap. |