SBC Fab Valve Cover Set Dual Crossover Breather

The SBC Fab Valve Cover Set Dual Crossover Breather from KEVKO Oil Pans & Components is a purpose-built crankcase ventilation solution designed for small-block Chevrolet engines undergoing serious modifications. This dual crossover breather system addresses a critical need for builders stepping beyond stock breathing capacity—whether you're upgrading to a higher-lift cam, adding forced induction, or simply running tighter ring tolerances on a stroked or bored short-block. Proper crankcase evacuation prevents pressure buildup that can compromise gaskets, seals, and overall engine reliability during sustained high-rpm operation.

The dual crossover breather design incorporates dual ports that work in tandem to efficiently route positive and negative crankcase pressures away from the engine block, reducing back-pressure and minimizing oil carry-over into the intake manifold. KEVKO's fabricated valve cover construction delivers superior materials and precision engineering compared to stamped alternatives, ensuring leak-free sealing and long-term durability under high boost or extended track use. The crossover configuration balances flow between both cylinder banks, which is especially important on engines with aggressive cam timing, high compression ratios, or turbo/supercharger applications where standard single-point breathers become a constraint.

This valve cover set is ideal for small-block Chevy engine builders, street rodders, and track enthusiasts who demand reliability and performance symmetry. Installation is straightforward on most SBC platforms, though you'll want to verify fitment with your specific intake manifold and header configuration, as crossover routing can vary between applications. Whether you're building a 383 stroker, a LS-swap compatible SBC, or a dedicated race engine, this KEVKO system provides the breathing capacity and quality construction that serious builders expect.