Shim Flywheel Chevy V8 .030 (2pc Rear Main)

The Shim Flywheel Chevy V8 .030 (2pc Rear Main) from TCI is a precision-engineered shimming solution designed for engine builders and transmission specialists working on Chevrolet V8 platforms. This component addresses a critical need when upgrading or rebuilding engines with modern transmission combinations: correcting rear main seal clearance and flywheel-to-crank runout that can lead to seal leakage, vibration, and premature wear.

Whether you're swapping a modern transmission into a classic Chevy, refreshing a high-mileage engine, or fine-tuning a stroker build, proper flywheel shimming is essential for long-term reliability. This two-piece rear main shim set provides .030-inch of clearance correction, allowing you to dial in exact spacing between the flywheel and crankshaft. TCI manufactures these shims to tight tolerances, ensuring consistent fit and repeatability across multiple applications.

Proper shimming eliminates seal contact issues that cause leakage and reduces harmonic imbalance that compromises drivetrain integrity during acceleration and engine braking cycles. This shim kit is ideal for transmission swaps, engine overhauls, and custom builds where crankshaft and flywheel dimensions vary from factory specifications. Installation requires only basic mechanical knowledge and hand tools—simply place the shims as needed for optimal performance.