SBC Street Stock Header 1-7/8

The SBC Street Stock Header 1-7/8 by SCHOENFELD is purpose-built for small-block Chevrolet engines running street and bracket racing applications. This header delivers the bolt-on exhaust scavenging efficiency serious engine builders demand, offering a direct path for spent gases from cylinder head to collector without the flow restriction of factory manifolds. Street stock competitors and street-driven performance builds rely on this design to unlock horsepower while maintaining compatibility with real-world driving constraints and emissions considerations.

The 1-7/8 inch primary tube diameter is the street stock standard—a proven sweet spot that balances mid-range torque with peak power in the 5000–7000 rpm band typical of naturally aspirated small-blocks. SCHOENFELD's tube construction ensures durability under sustained heat cycling, while the optimized header geometry minimizes turbulence at the collector junction to improve exhaust velocity and reduce backpressure. Mandrel-bent tubing maintains consistent wall thickness throughout the bends, preventing the kinking and flow collapse that compromise budget headers and rob power on the dyno.

This header fits SBC engines from 283 to 400 ci displacement and integrates seamlessly into street stock rule packages where aftermarket tube headers are permitted. Installation requires basic hand tools and clearance verification depending on engine bay configuration—tight spaces may demand custom fabrication of collector exits or downpipe adapters. Pair this header with a quality high-flow catalytic converter and mandrel-bent exhaust system to realize full potential, and expect real-world gains of 15–25 horsepower on naturally aspirated street engines. The 1-7/8 sizing also suits carbureted and fuel-injected platforms, making this a versatile choice for vintage restomod projects and weekend bracket racers alike.