SBC Crossover Headers 1-5/8

The SCHOENFELD SBC Crossover Headers 1-5/8 are purpose-built performance exhaust manifolds designed for small block Chevy engines seeking improved scavenging and power delivery. These conventional crossover headers address a fundamental limitation in stock manifold design: unequal exhaust pulse timing and backpressure distribution. By routing primary tubes strategically across the engine valley and merging them into a central 3-inch collector, these headers allow exhaust gases from opposite cylinder banks to flow with minimal interference, reducing reversion and maximizing low- to mid-range torque where most street and bracket racing applications operate.

Constructed from mandrel-bent steel tubing with 1-5/8 inch primary diameter, the SBC Crossover Headers 1-5/8 deliver the optimal balance between scavenging efficiency and drivability for naturally aspirated small block engines in the 350–383 cubic inch range. The 3-inch collector consolidates the eight primary tubes into a unified exhaust path, reducing turbulence and promoting laminar flow into a quality aftermarket muffler or exhaust system. Black paint finish protects against corrosion while maintaining a factory-appearance aesthetic. Complete gaskets and hardware are included, eliminating the need for separate purchases and ensuring a leak-free seal at both the cylinder head flange and collector outlet. The pair configuration allows immediate bolt-on installation without custom fabrication.

These headers are ideal for street-driven vehicles, weekend track cars, and bracket racers operating carbureted or fuel-injected small block Chevy platforms. Installation requires standard hand tools and basic mechanical knowledge; clearance with steering components, brake lines, and oil pans should be verified before purchase, as crossover headers sit lower than conventional side-exit manifolds. Compatibility is confirmed for small block Chevy applications using standard 262, 283, 305, 327, 350, and 383 cubic inch engines. Pairing the SBC Crossover Headers 1-5/8 with a quality cat-back exhaust system and proper jetting or fuel mapping maximizes both performance gains and engine longevity on the street or strip.