3/8 .135 Wall Moly Pushrod - 8.550 Long

The 3/8 .135 Wall Moly Pushrod - 8.550 Long is a precision-engineered valve train component designed for high-performance marine and automotive engines where reliability under sustained load is non-negotiable. Built for serious boaters and engine builders who understand that a pushrod's strength directly impacts valve timing consistency and overall engine durability, this Manley component serves as a critical link between rocker arms and lifters. Whether you're running a freshly built small-block or restoring a classic inboard, a quality pushrod prevents deflection and flex that rob power and create valve float at high RPM.

Manufactured from chromoly steel with a 0.135-inch wall thickness, this 8.550-inch pushrod offers the strength-to-weight ratio essential for demanding marine service. The .135 wall specification provides substantially more rigidity than standard pushrods without excessive mass, reducing inertial losses and allowing the valve train to follow cam lobe profiles more precisely. Swedged ends ensure a clean, secure interface with rocker studs and lifter cups, eliminating the lateral play that causes premature wear and erratic valve actuation. The moly (molybdenum) content in the chromoly alloy enhances fatigue resistance and thermal stability—critical attributes when engines operate under continuous throttle and sustained RPM in open-water conditions.

This pushrod is ideal for small-block Chevrolet, Ford, and Chrysler engines commonly found in marine inboards and performance rebuilds where factory-grade components no longer meet power and reliability targets. Proper installation requires precise rocker arm geometry and lifter preload verification—incorrect setup will negate the pushrod's structural advantages. Manley's reputation for valve train excellence makes this component a trusted choice among engine builders who refuse to compromise on the details that separate a reliable cruiser from an engine prone to catastrophic failure. Weighing just 0.24 pounds, it contributes minimal rotating mass while delivering maximum durability across thousands of operating hours.