3/8 Chry Pushrods W/Adj. Rocker Arms- 383-400

The 3/8 Chry Pushrods W/Adj. Rocker Arms for 383-400 engines represent a precision-engineered solution for serious marine and high-performance applications where reliability under sustained load is non-negotiable. These chromoly pushrods are built for boaters and engine builders who demand consistent valve actuation across extended operating hours—whether you're running a classic 383 stroker or a robust 400 small-block in a high-performance marine platform. The adjustable rocker arm design allows fine-tuning of valve geometry, a critical advantage when optimizing cylinder head flow and combustion efficiency in naturally aspirated or lightly boosted setups.

Manufactured by COMP CAMS, the industry leader in valve train components, this set features 3/8-inch diameter chromoly construction with 0.080-inch thick walls—a specification that balances rigidity and weight to minimize deflection under valve spring pressure while maintaining durability in high-RPM environments. The 8.710-inch length accommodates standard deck heights and conventional small-block geometry, and the adjustable rocker arms enable precise pushrod geometry correction critical for optimizing valve overlap, duration control, and preventing valve-to-piston clearance issues. The complete set of 16 pushrods ensures matched pairs for all eight cylinders, eliminating inconsistencies that could lead to uneven cylinder pressures or combustion instability.

This pushrod set is ideal for engine rebuilds, performance upgrades, and restorations targeting 383 or 400 cubic-inch small-block platforms in marine applications, racing builds, or high-output street engines. Installation requires proper rocker arm geometry setup—lightly preload each adjuster nut to ensure zero lash at idle, then verify valve lift and timing with a dial indicator to confirm proper valve operation. For best results, pair these pushrods with quality valve springs, hardened pushrods seats, and a compression-tested cylinder head to maximize reliability and horsepower delivery across the full throttle range.