1-5/8 Swap Headers - SBF 351W Titanium

The 1-5/8 Swap Headers – SBF 351W Titanium from BBK Performance are high-performance exhaust manifolds designed for engine builders and performance enthusiasts working with small-block Ford 351W engines. These headers are ideal for various applications, including classic muscle cars, street rods, and modern restomods, providing the necessary scavenging efficiency and heat management for high-output builds.

Featuring a 1-5/8-inch primary tube diameter, these headers balance low-RPM response with peak horsepower potential for both naturally aspirated and moderately boosted setups. Constructed from titanium, they offer exceptional durability and thermal efficiency, significantly reducing underhood temperatures and minimizing heat transfer to sensitive components. BBK's precision mandrel-bent construction ensures smooth tube bends, eliminating turbulence and flow restrictions.

These headers are particularly beneficial for 351W engine swaps into Fox-body Mustangs, older F-Series trucks, and vintage Broncos, where space and cooling capacity may be limited. By optimizing exhaust gas velocity and cylinder scavenging, they promote cleaner combustion and increased airflow when paired with a matched intake and fuel system.