5/16in Moly Pushrod - 7.800in Long

The MANLEY 5/16in Moly Pushrod — 7.800in Long is a precision valve train component engineered for high-performance marine and automotive engines. Built from chromoly steel with a 0.080-inch thick wall and swedged ends, this pushrod delivers the durability and dimensional consistency required for demanding engine applications where reliable valve actuation under stress is non-negotiable.

The 5/16-inch diameter and 7.800-inch length are critical for proper rocker arm and lifter interface, ensuring consistent valve lift and timing across the entire RPM range. Chromoly construction provides superior strength-to-weight ratio compared to standard steel, reducing inertial loading on the cam and lifter while withstanding the cyclical stresses of high-RPM operation. The swedged end design accommodates both ball-and-socket and cup-style pushrod seats, offering flexibility in engine configurations. This component is designed as a single unit, allowing for straightforward replacement or upgrade without requiring multiple pieces.

This pushrod suits rebuilds and performance upgrades for small-block and mid-block engines in marine powerboats, vintage hot rods, and high-output truck applications. Buyers performing a complete valve train refresh—whether following an engine overhaul or upgrading to a more aggressive cam profile—rely on MANLEY components to ensure all clearances and valve events are optimized. Marine operators particularly benefit from chromoly's corrosion resistance relative to standard steel, an important consideration in salt-air environments.

MANLEY is known in the engine-building community for strict dimensional tolerances and material consistency. When upgrading or replacing pushrods, exact length and diameter matter—even small variations affect valve timing and rocker geometry. This 7.800-inch length is a common specification for many classic and modern street/performance applications, making it a direct fit for the right platform.

Weighing just 0.13 lbs, the pushrod integrates into the valve train without adding significant mass, a key factor in achieving consistent valve control across gear changes and throttle transitions. Whether you're rebuilding a marine engine, restoring a classic vehicle, or pursuing peak performance on the dyno, the MANLEY 5/16in Moly Pushrod provides the precision and durability required for reliable operation.