Crossover Headers 1-3/4

The Schoenfeld Crossover Headers 1-3/4 (model 136H) is designed specifically for builders and engine tuners who require enhanced exhaust scavenging and performance improvements. These headers are ideal for small-block engines, particularly those in the 300–400 cubic inch range, and are suitable for various applications, including street machines and classic performance restorations.

Engineered with a 1-3/4-inch primary tube diameter, these headers optimize exhaust flow while minimizing backpressure, which is crucial for maintaining mid-range torque. The crossover configuration merges exhaust pulses from opposite cylinder banks at the collector, enhancing volumetric efficiency through tuned header technology. This design ensures even runner lengths and precise collector geometry, contributing to significant horsepower and torque gains across the RPM range.

Serious engine builders and fabricators trust Schoenfeld headers for their reliability and performance. The robust construction balances material thickness with weight savings, making these headers a valuable addition to any performance-oriented build. Whether you're aiming for a competitive edge on the track or enhancing a classic vehicle, the Schoenfeld Crossover Headers deliver the performance benefits you need.