Ford FE Spacer Kit for #4006B

The Ford FE Spacer Kit for #4006B is a precision rocker arm shim assembly designed for builders and enthusiasts who run Harland Sharp shaft mount rocker arms on Ford FE-series engines. This steel shim kit addresses the critical task of establishing correct valve lash geometry and rocker arm geometry clearance—essential variables that directly impact valve train stability, cam timing accuracy, and overall engine reliability during high-RPM operation.

Manufactured from hardened steel, the spacer kit provides the dimensional precision required to fine-tune rocker arm height and centerline positioning on shaft-mount systems. Proper shimming ensures consistent pushrod geometry, reduces deflection under load, and maintains optimal contact between the rocker and valve stem. The compact assembly (measuring 3.55 x 1.9 x 6.85 inches and weighing just 1.14 lbs) integrates seamlessly into your existing Harland Sharp rocker arm setup without modification to engine block or cylinder head mounting surfaces. Steel construction guarantees durability through multiple engine rebuilds and high-performance use.

This kit is ideal for Ford FE-series engine builds ranging from street performance to competition applications, particularly for users upgrading from factory stamped rockers to premium shaft-mount designs. Engine builders, restoration shops, and serious hot-rodders rely on this spacer kit to eliminate valve train noise, maintain precise valve events, and extend component service life. Compatible exclusively with the #4006B Harland Sharp rocker arm platform, it is an essential accessory when transitioning to modern rocker technology on classic Ford big-block engines. Installation requires no special tools and provides immediate improvement in valve train consistency and performance.