Chevy V8 Crank Pulley Shim Kit

The Chevy V8 Crank Pulley Shim Kit from MOROSO is an essential engine accessory designed to fine-tune crankshaft pulley alignment and offset on small-block and big-block Chevrolet V8 engines. This three-piece set delivers precise spacing solutions for builders and engine technicians who need to adjust pulley position for optimal belt tension, accessory clearance, or engine timing requirements. Whether you're assembling a stock rebuild, a custom performance engine, or resolving fitment issues with aftermarket accessories, this kit provides the accuracy and flexibility demanded by serious engine work.

Each shim is precision-machined from aluminum and available in three distinct thicknesses: 0.063 inch, 0.125 inch, and 0.188 inch, allowing stacked or individual placement to achieve exact pulley offset in 0.063-inch increments. Aluminum construction keeps weight minimal—critical for high-RPM applications where rotating mass directly impacts engine response and wear patterns. The natural finish resists corrosion while maintaining easy installation and removal, making these shims ideal for both initial assembly and future adjustments. This modular design eliminates the need for multiple specialized pulleys or costly rework.

Engine builders, restoration shops, and performance enthusiasts rely on the Chevy V8 Crank Pulley Shim Kit to solve common fitment challenges without compromising reliability or requiring extensive machining. The kit is compatible with all Chevrolet small-block (262–400 cu in) and big-block (396–502 cu in) V8 engines using standard crankshaft pulley designs. Installation is straightforward: position shims between the pulley hub and crankshaft snout, then torque the crankshaft bolt to factory specification. This proven solution has become standard in engine shops where precision and repeatability matter.