Overview

Chevrolet Performance Big Block Aluminum Roller Rocker Arms

Chevrolet Performance big block aluminum roller rocker arms are upgraded, high performance valvetrain components. Designed for big block Chevy engines, they replace stock pivoting "ball" rockers to reduce valvetrain friction, improve engine efficiency, and maintain precise valve lift at high RPMs.

Key features:

* Full Roller Bearing Design: Both the fulcrum (pivot point) and the valve-tip utilize needle bearings instead of sliding metal, drastically reducing friction and heat while freeing up horsepower
* Aluminum Construction: The rocker arms are CNC-machined from lightweight, high-tensile extruded aluminum, reducing reciprocating mass in the valvetrain for faster engine response
* 1.7:1 rocker ratio acts as a leverage tool to multiply the camshaft's lift, allowing the engine's valves to open wider and improve airflow
* Pressurized Oiling: Designed with extra-wide bodies and internal passages to deliver a continuous stream of pressurized oil directly to the rollers and valve tips
* Heavy-Duty Tips: The roller tips and axles are constructed from hardened 8620 and 4130 steel to withstand aggressive valve spring pressures

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