1.600 C/P Exhaust Valve 5/16 Dia. 5.200 OAL

The 1.600 C/P Exhaust Valve 5/16 Dia. 5.200 OAL (Model F2046P) is a precision-engineered competition exhaust valve designed for serious engine builders and high-performance mechanics working with GM GenV LT-series powerplants. As an aftermarket upgrade from OEM equivalents, this hollow-stem valve addresses the demands of racing engines and heavily modified street builds where heat dissipation and weight reduction are critical factors. Whether you're assembling a turbo LS swap, bracket racing engine, or naturally aspirated stroker, this valve delivers the geometry and material science required for reliable high-RPM operation.

Featuring a 1.600-inch head diameter and 0.313-inch valve stem, this exhaust valve is manufactured from stainless steel for superior corrosion resistance and thermal stability under sustained combustion pressures. The hollow-stem construction reduces reciprocating mass—a key advantage in competition applications where valve float and spring surge demand the lowest possible valve weight. At 5.200 inches overall length, this valve integrates with OEM and aftermarket cylinder head castings without modification, though proper valve seat cutting and stem seal fitment remain essential. The stainless composition resists carbon buildup and oxidation, extending service intervals in high-boost and extended-throttle scenarios where mild steel alternatives would degrade rapidly.

This valve is ideal for engine builders, performance shops, and enthusiasts upgrading GenV LT-series heads—particularly those running aggressive cam profiles, nitrous, or turbocharger systems. Installation requires careful measurement of valve seat pocket depth, stem-to-guide clearance, and spring pressure compatibility to ensure proper sealing and longevity. Each valve ships individually, allowing builders to purchase matched sets as needed for complete valve train assembly. Confirm OEM head casting compatibility and consult valve spring specifications before installation to guarantee reliable performance across your intended operating range.