Adjusting Screw for #1321

The adjusting screw for #1321 by COMP CAMS is a precision rocker arm adjuster engineered for serious engine builders and mechanics who demand valve train accuracy. This component is essential for anyone performing valve lash adjustments on solid roller or mechanical cam systems, where proper clearance directly impacts engine performance, longevity, and reliability. Built to exact OEM specifications, this adjusting screw ensures consistent valve clearance across the entire RPM range, preventing valve float and maintaining optimal combustion chamber sealing.

Manufactured from hardened steel, the adjusting screw features a 7/16-20 inch thread with a 5/16 inch ball end geometry designed to interface precisely with rocker arm cup geometry. The ball-end design distributes clamping force evenly across the valve stem tip, reducing wear and ensuring repeatable adjustment. At just 0.04 lbs and compact dimensions (1.3 x 0.65 x 4.1 inches), this fastener integrates seamlessly into tight engine bay configurations without requiring modification to existing rocker assemblies. Steel construction provides exceptional durability under the thermal cycling and mechanical stress inherent to high-performance and racing applications.

This adjusting screw is ideal for builders working with COMP CAMS rocker arms (part #1321) and compatible with most aftermarket solid roller cam packages where manual valve lash adjustment is required. Installation is straightforward—thread the screw into the rocker arm adjuster body until snug, then perform your standard valve lash procedure using a feeler gauge. Whether you're tuning a street performance engine, a weekend drag racer, or a road course competitor, precise valve clearance adjustment using quality components like this ensures repeatable starts, consistent power delivery, and extended valve train life.