5/16 Moly Pushrods - 6.400 Long

The 5/16 Moly Pushrods - 6.400 Long (MAN25640-16) represent a critical upgrade for serious engine builders and performance mechanics looking to maximize valvetrain stability and reliability in high-RPM applications. These pushrods serve as the mechanical link between your rocker arms and lifters, transmitting precise valve actuation commands while maintaining rigidity under extreme acceleration and deceleration loads. Whether you're building a street performance engine, vintage drag car, or precision circle-track machine, quality pushrods are non-negotiable for consistent power delivery and component longevity.

Constructed from molybdenum (Moly) steel, these 6.400-inch pushrods offer superior strength-to-weight ratio compared to standard chromoly alternatives, reducing inertial loads on your valvetrain while resisting bending and flex under peak cylinder pressures. The 5/16-inch diameter provides optimal stiffness for mid-block and big-block applications without unnecessary mass penalty. Moly material composition resists galling, scuffing, and wear at the ball socket and cup interfaces, extending pushrod and rocker arm lifespan while maintaining critical clearances that prevent valve lash drift and float conditions at elevated RPM thresholds. The precise 6.400-inch length accommodates standard small-block and mid-block geometries, making installation straightforward for experienced builders.

These pushrods excel in naturally aspirated, supercharged, and turbocharged engine platforms where valvetrain integrity directly impacts horsepower delivery and component reliability. Mechanics upgrading from factory steel or hollow-core pushrods will notice improved stability during aggressive cam profiles, higher valve spring pressures, and extended RPM ranges. Proper installation requires careful measurement of pushrod length to ensure zero lash condition at idle while maintaining adequate preload through your rocker arm geometry—a critical step that separates amateur builds from championship-level engine work. Pair these with quality rocker arms, quality valvesprings, and precision-ground camshafts for complete valvetrain harmony.