Chevy Dist. Shim Kit

The MOROSO Chevy Distributor Housing Shim Kit (Part #26150) is a precision engine accessory engineered to correct distributor timing alignment and housing clearance issues on Chevy V6 and V8 engines. This shim kit addresses a common performance tuning challenge where distributor bore tolerance stack-up or engine block variations prevent proper distributor seating, resulting in ignition timing errors and performance loss.

The kit includes three nylon shim thicknesses—0.030 inch, 0.060 inch, and 0.100 inch—allowing you to dial in the exact clearance needed for your specific engine configuration. Each shim features a 1.290-inch inner diameter and 1.830-inch outer diameter, matching the standard Chevy distributor housing bore. Nylon construction resists corrosion and provides the necessary wear characteristics without damaging the distributor housing bore or shaft. Combined shim selection lets you achieve precise distributor depth positioning, critical for maintaining spark timing accuracy and eliminating centrifugal advance misalignment.

This is essential for Chevy V6 and V8 engine builders and hot rodders performing distributor installation, engine block deck work, or addressing persistent timing issues. Whether you're dealing with a bored block, an older block with worn bore tolerances, or a performance rebuild requiring precision ignition control, having the proper shim selection on hand prevents the costly mistake of installing a distributor that won't seat correctly or maintains improper depth clearance. The compact kit (0.03 lbs) fits easily in any toolbox.