3/8 .135 Wall Moly Pushrod - 8.000 Long

The MANLEY 3/8 .135 Wall Moly Pushrod – 8.000 Long (Part No. 25339-1) is a chromoly valve train component engineered for high-performance engine applications requiring precision valve actuation and durability under sustained RPM. This 8-inch pushrod features a .135-inch wall thickness with swedged ends, designed to deliver consistent valve timing geometry across demanding operating conditions. Built from chromoly steel, this pushrod resists deflection and fatigue failure common in stock components, making it essential for engines pushing beyond factory power levels.

The 3/8-inch diameter and .135-inch wall specification strike a critical balance between strength and weight. Thicker walls reduce flex under valve spring pressure, which is vital when running higher spring rates required for aggressive cam profiles and elevated RPM operation. The swedged ends provide secure seating in rocker arms and pushrods tunnels, eliminating slop that compromises valve clearance accuracy. At 0.23 pounds, the lightweight construction minimizes inertial mass, allowing faster valve transitions and reducing stress on the entire valve train assembly during rapid cycles.

This pushrod serves engine builders and performance enthusiasts restoring or upgrading classic muscle cars, circle track racing engines, and high-output street engines where stock valve train components cannot reliably handle modified cam profiles and spring pressures. Serious builders rely on MANLEY pushrods to ensure consistent valve events, prevent float conditions, and extend component life under continuous high-load operation. The 8-inch length accommodates standard small-block and mid-block engine configurations common in American performance platforms.