Headers 68-76 Olds Car 400-455 Engine

The HEDMAN Headers 68-76 Olds Car 400-455 Engine are a high-performance solution tailored for classic Oldsmobile muscle car enthusiasts looking to enhance exhaust flow. Specifically designed for first-generation big-block Olds platforms, these headers replace restrictive factory cast-iron manifolds with purpose-built tubular construction, making them ideal for restoring models like the 1968–1976 Cutlass, 442, or Delta 88.

Engineered with mandrel-bent tubing and optimized runner geometry, these headers maximize exhaust velocity and minimize backpressure across the RPM range. The primary tubes are sized and angled to match the cylinder head ports on your big-block engine, ensuring smooth gas flow without turbulence or dead spots. The tubular design also improves thermal management compared to stock manifolds, reducing underhood heat and enhancing overall combustion efficiency.

These headers are a direct-fit choice for any 400 or 455 Oldsmobile engine installed in 1968–1976 vehicles, making them essential for owners planning cam upgrades, carburetor tuning, or complete performance builds. With a 2-inch exhaust outlet diameter, they are designed for optimal street performance and exhaust scavenging efficiency, ensuring that your classic Olds performs at its best.