Crossover Headers 1-3/4 - 2in

The Schoenfeld Crossover Headers 1-3/4 - 2in is a purpose-built exhaust manifold designed for Small Block Chevy engines seeking improved scavenging, horsepower gains, and smoother exhaust flow. As a seasoned mechanic, you understand that factory manifolds restrict exhaust gas velocity and create turbulence that kills performance. These conventional crossover headers eliminate those bottlenecks by routing exhaust from cylinders 1, 2, 3 on one bank and 6, 5, 4 on the opposite bank into a single 3.5-inch collector—a configuration that balances back-pressure while maximizing velocity through the primary tubes.

These headers feature 1.75-inch primary tube diameter stepping up to 2-inch outlets, a proven geometry for street and mild race applications that maintains strong mid-range torque while unlocking top-end power. Constructed from high-temperature steel and finished in durable black paint, the headers resist thermal cycling and corrosion. The kit ships complete with gaskets and hardware—everything needed for a bolt-on installation. Weighing 35.7 lbs, the pair is substantial enough to handle continuous heat without warping or cracking, and the crossover design ensures balanced cylinder scavenging across both banks, eliminating the asymmetrical flow issues common with single-plane manifolds.

Small Block Chevy owners installing stroker builds, cam upgrades, or carbureted hot rods will see meaningful gains—typically 15–35 hp depending on other modifications. These headers work best paired with a full exhaust system (cat-back or headers-back) to realize their potential; a restrictive muffler negates the flow advantages you've paid for. Installation requires basic hand tools and core-drill or bolt-removal expertise; the gaskets included prevent exhaust leaks at the cylinder head flange. Compatibility is limited to conventional Small Block Chevy engines (262–400 cubic inches) with standard mounting locations.