3/8 .135 Wall Moly Pushrod - 8.500 Long

The 3/8 .135 Wall Moly Pushrod — 8.500 Long by Manley is a precision-engineered valve train component designed for high-performance and racing engine builds where reliability under extreme conditions is non-negotiable. Pushrods are critical link between the camshaft and rocker arms, transmitting cam lift directly to valve actuation; a lightweight, rigid pushrod directly improves valvetrain response, reduces deflection, and enables consistent valve timing across the full RPM range. This 8.500-inch length Manley unit is engineered for engines requiring optimal geometry and maximum durability in forced-induction, naturally aspirated, and nitrous oxide applications.

Constructed from chromoly (chromium-molybdenum steel alloy), this pushrod delivers superior strength-to-weight ratio compared to standard steel alternatives, reducing reciprocating mass while maintaining structural integrity under high-load scenarios. The 3/8-inch diameter with 0.135-inch wall thickness represents a balance between light weight and torsional rigidity—thicker walls resist bending under aggressive valvetrain loads, while the compact diameter minimizes overall weight. Swedged ends provide secure seating in rocker arm and lifter cups, eliminating potential slippage during high-RPM operation. Manley's manufacturing tolerances ensure concentricity and straightness, critical for minimizing harmonic vibration and lateral forces on valve stems and guides.

This pushrod is ideal for serious enthusiasts and professional engine builders upgrading stock valvetrain components in small-block and mid-displacement engines where the 8.500-inch length matches original or modified bore/stroke geometry. Compatibility depends on cylinder head design, deck height, and rocker arm ratio; verify correct length with your engine's specific combination before purchase. Installation requires removal of valve covers and rocker arm assembly; proper pushrod length is essential for maintaining correct rocker arm geometry and preventing binding or excessive clearance. Manley's reputation for quality control makes these pushrods a trusted choice for customers building engines for street performance, circle track, drag racing, and road course applications.