Patriot Exhaust H8026 – 2" Headers for Chevrolet Chevelle Big Block 1964–77. High-performance steel exhaust headers for GM Big Block V8 engines, engineered for classic Chevrolet platforms including Chevelle, El Camino and Monte Carlo, providing enhanced horsepower, torque and exhaust scavenging.
- Header style: Long-tube, one-piece header design for optimized exhaust flow, increased power and improved throttle response
- Material: Steel, heavy-duty construction for long-term durability in both street and performance applications
- Primary tube outside diameter (inch): 2" primary tubes engineered for high-performance GM Big Block engines
- Surface finish/color: Uncoated, suitable for custom high-temperature paint or ceramic coating
- Flange style: Standard cylinder head flange compatible with GM Big Block cylinder heads
- Welded assembly: No, supplied as a complete header assembly ready for installation
- Cylinder head port shape: SAP ports precisely matched to GM Big Block cylinder head exhaust ports
- Collector connection: 3-bolt flange for a straightforward connection to existing or custom exhaust systems
- Collector diameter (inch): 3.5" collector designed to maximize exhaust flow and performance
- Collector reducers included: Yes, collector reducers are included to facilitate exhaust system connection
- Outlet diameter of collector reducer: 2.5" outlet for integration with standard or aftermarket exhaust systems
- Brand: Patriot – a recognized and trusted manufacturer of performance exhaust headers and complete exhaust systems
Compatible with GM Big Block (396, 402, 427, 454) A-, B- and F-body models from 1967–87, making it an excellent choice for restorations, performance upgrades and enhancing classic Chevrolet muscle cars with improved exhaust flow and sound:
- Chevrolet Chevelle – 1964–77
- Chevrolet El Camino – 1964–77
- Chevrolet Monte Carlo – 1970–77
- Chevrolet Caprice / Bel Air / Impala and other full-size Chevrolet passenger cars – 1970–74
- Chevrolet Camaro – 1970–72 (F-body)
