3/8in Moly Pushrods - 8.380in Long

The 3/8in Moly Pushrods - 8.380in Long from MANLEY represent a critical upgrade for serious boaters and marine engine builders who demand reliability under sustained high-RPM operation. Built to exacting specifications for performance marine applications, these chromoly pushrods are engineered to withstand the demanding conditions of heavy-use powerboats, racing engines, and high-output inboards where stock components fall short. Whether you're rebuilding a worn engine or upgrading to handle increased horsepower, these pushrods form the backbone of a valve train that can keep pace with your water's demands.

Manufactured from chromoly steel with a 0.080-inch thick wall construction, these 3/8-inch diameter pushrods deliver the strength-to-weight ratio necessary for precise valve actuation at higher engine speeds without deflection or flex. The swedged ends provide a secure, interference-fit connection to both rocker arms and lifters, eliminating play and ensuring consistent lift geometry across the entire power band. At 8.380 inches in length, this dimension is critical for proper rocker geometry and pushrod angle—even minor deviations can compromise valve timing and efficiency. The set of eight ensures complete coverage for a full eight-cylinder engine, making this a practical solution for a complete valve train restoration or performance upgrade.

Marine engine builders, performance shops, and experienced boaters upgrading worn inboard powerplants benefit most from MANLEY's proven pushrods. These components excel in applications where engine revs regularly climb into the higher ranges and sustained load demands eliminate margin for error. Proper installation requires careful measurement of existing pushrod length and rocker geometry to ensure this 8.380-inch specification matches your engine's blueprint—consult your marine engine manual or builder's specifications before ordering. When paired with quality rocker arms, lifters, and a properly blueprinted valve train, these pushrods deliver the reliability to keep your engine running strong season after season.