Hedman Hedders 68609 Painted Exhaust Headers for GM D-Port 283-400

Hedman Hedders 68609 painted exhaust headers are engineered to maximize engine performance and efficiency by replacing restrictive factory manifolds. These headers feature smoothly contoured individual primary pipes for each cylinder that create a scavenging effect, pulling exhaust gases out of the combustion chamber more rapidly than stock manifolds. This improved exhaust flow allows for a larger fresh fuel charge and reduces cylinder temperatures, resulting in measurable power gains for passing, towing, and hauling applications.

Key Features:

• Individual tuned primary pipes optimize exhaust scavenging for maximum power
• Painted finish provides corrosion resistance and clean appearance
• Designed for straightforward installation with included instructions
• Reduces engine operating temperature by eliminating exhaust bottlenecks
• Increases horsepower and torque across the RPM range
• May improve fuel economy under load conditions

Compatible with GM D-Port small block engines (283-400 cubic inch) in various Buick, Chevrolet, and Pontiac applications from the 1960s through 1990s. These headers apply racing-derived technology to street applications, delivering the performance benefits of dedicated exhaust tubing for each cylinder. The painted coating protects against rust and corrosion while maintaining a factory-style appearance.