SBC 180 Deg C/O Headers 1-5/8

The SCHOENFELD SBC 180 Degree Crossover Headers (Model 179-1) represent a purpose-built exhaust manifold solution engineered for small-block Chevrolet engine builders seeking optimized scavenging and flow characteristics. These headers feature 1-5/8 inch primary tubes that merge into a 3-inch collector, utilizing 180-degree crossover geometry to maximize exhaust gas velocity and cylinder evacuation across the RPM range. The design eliminates traditional separate manifolds, consolidating exhaust flow into a single, thermally efficient unit constructed from high-quality steel with black paint finish for corrosion resistance and durability under underhood conditions.

The 1-5/8 inch primary diameter is specifically sized for small-block Chevrolet displacement ranges, offering the balance between scavenging efficiency and backpressure management that street and strip applications require. The 3-inch collector consolidates exhaust from both banks into a single outlet, reducing turbulence and improving transient response. Complete gasket and hardware inclusions eliminate guesswork during installation, while the crossover header configuration reduces underhood clutter compared to dual-manifold setups. Weight of 34.6 lbs reflects the solid steel construction necessary for longevity in high-heat exhaust environments. Dimensions of 20.5 x 12 x 33.5 inches accommodate typical small-block mounting locations with standard engine bay configurations.

These headers suit builders and restorers upgrading small-block Chevrolet powerplants in street cars, performance restorations, and budget-conscious race builds where manifold swaps or intake modifications require matched exhaust architecture. The 180-degree crossover geometry particularly benefits naturally aspirated engines in the 350–454 cubic inch range, where cylinder-to-cylinder scavenging effects directly influence midrange torque and peak power delivery. Installation requires proper gasket sealing and torque sequencing to prevent exhaust leaks that degrade performance gains.

SCHOENFELD headers have established market presence among Chevrolet performance enthusiasts for decades, with 180-degree crossover designs representing the company's core manufacturing focus. This SKU specifically targets small-block applications where OEM manifolds limit airflow or where custom engine combinations demand integrated exhaust solutions. Verification of existing engine bay clearance and mounting provisions against the stated dimensions ensures successful fitment before purchase.

TacticalSurplusUSA stocks this model for builders seeking authentic OEM-specification or performance-grade manifold replacement without supplier lead times, complete with all hardware necessary for same-day installation planning.