Overview
Flowmaster is proud to introduce our American Thunder dual exhaust system for 1967-1974 Camaro and Firebird, and 1968-1974 Nova. The system features our exclusive 80 Series Crossflow performance muffler that tucks up high behind the rear differential. Other features include all mandrel-bent dual 2.50-inch head pipes with a built-in H-pipe crossover and dual 2.50-inch tailpipes for a deep rich sound and optimum performance. This Crossmember-Back aluminized steel exhaust system gives these classic muscle cars a moderate tone inside and out. The system includes all parts, hardware and illustrated instructions and is covered by our 3-year Limited Warranty. If you prefer Stainless steel construction, check out optional system# 817104 which comes with a Lifetime Limited Warranty. Notes: Does not include manifold downpipes or header reducer cones. Convertible models will require adding 3/8-inch of shims to the stock factory X-brace for clearance or purchasing Hotchkis Performance Convertible brace Part# 1404.
Features
- H-pipe Crossover for Maximum Power and Deep Tone
- Includes Hangers and Hardware for Easy Installation
- Mandrel-bent 16-gauge Aluminized Steel Tubing
- Does Not Include Manifold Downpipes or Header Reducers
- Moderate Exterior Exhaust Tone
- Maximum Ground Clearance
- Crossmember-back System
Application
- Fits:
- 1967-1974 Chevrolet Camaro
- 1969-1974 Chevrolet Nova
- 1967-1974 Pontiac Firebird
- Engines:
- 4.9L V8 302 CID
- 5.0L V8 307 CID
- 5.3L V8 326 CID
- 5.3L/5.4L V8 327 CID
- 5.7L V8 350 CID
- 6.5L V8 396 CID
- 6.6L V8 400 CID
- 6.6L V8 402 CID
- 7.0L V8 427 CID
- 7.4L V8 454 CID
- 7.5L V8 455 CID
- Convertible models require an aftermarket X-brace like Hotchkis Performance part# 1404 or adding 3/8-inch of shims to the stock factory X-brace for clearance.
Kit Contents
- 1x Muffler
- 2x Connector Pipe
- 1x H-Pipe Assembly
- 1x Intermediate Pipe (Right)
- 1x Intermediate Pipe (Left)
- 1x Tailpipe (Right)
- 1x Tailpipe (Left)
- 1x Hardware Kit (40 total pieces)
Specs
| 2WD/4WD | 2WD |
| Brand | Flowmaster |
| Exhaust Series | American Thunder |
| Exit Position | Dual Out Rear |
| Heat Shield | No |
| Inlet Diameter (in) | 2.5 inch |
| Material | Aluminized Steel |
| Muffler Part Number | 42585 |
| Muffler Quantity | 1 |
| Muffler Series | 80 Series Crossflow |
| Outlet Diameter (in) | 2.5 inch |
| Product Type | Exhaust System |
| Single or Dual | Dual |
| Sound Level | Moderate |
| System Type | Crossmember-Back |
| Tip Quantity | Not Included |
| Tubing Diameter (in) | 2.5 inch |
| Type of Exhaust | Crossmember-Back |
| Part Number | 17104 |
