3/8 Hi-Energy Pushrod - 8.684 Long

The 3/8 Hi-Energy Pushrod measuring 8.684 inches long from COMP Cams is a precision valve train component engineered for small-block and mid-size V8 engines requiring high-performance reliability. As a mechanic working on serious engine builds, you know that pushrods are the critical link between your camshaft and rocker arms—any flex, bend, or deflection under load directly compromises valve timing and engine efficiency. COMP Cams' Hi-Energy design is built specifically to minimize deflection during aggressive valve events, making it the go-to choice for performance enthusiasts rebuilding stroker engines, solid-lifter cams, or high-RPM applications.

This 3/8-inch diameter pushrod features a heat-treated alloy steel construction that resists bending under the extreme pressures generated by modern high-lift camshafts and stiff valve springs. The 8.684-inch length is precisely engineered to work with specific engine geometries and rocker arm ratios, so proper fitment to your block's bore spacing and cylinder head height is essential. COMP Cams manufactures these rods with tight tolerances and straightness specifications that separate them from economy alternatives—you're paying for consistent geometry that translates to predictable valve events across the entire RPM band. The lightweight design (0.14 lbs per rod) keeps reciprocating mass low while the durable finish resists corrosion in both street and race environments.

Whether you're freshening a vintage small-block Chevy, building a 408-stroker, or upgrading a higher-revving solid-roller combo, this pushrod pairs seamlessly with COMP Cams' full lineup of camshafts and rocker arms. Installation requires careful measurement of pushrod length—even 0.050 inches of error creates geometry problems that cause premature wear on rocker tips and inadequate valve seating. Verify your engine's specific requirements (block deck height, head chamber geometry, rocker arm ratio) before ordering; this 8.684-inch length suits most standard small-block applications but is not universal. Expect to replace these in complete sets when rebuilding, as any worn or bent rods in the engine create imbalances that ripple through the entire valve train.