Speedmaster PCE235.1027.02 Chevy GM LS Engine 010 Oversize Main Bearings

The Speedmaster PCE235.1027.02 main bearing set provides a precision .010" oversize solution for rebuilding Chevrolet GM LS-series engines, including 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L applications. These bearings are engineered to restore proper crankshaft clearances in blocks that have been machined oversize or show main journal wear.

Key Features:

• Silicon aluminum bi-metal construction for superior durability
• High fatigue strength withstands extreme cylinder pressures
• Excellent temperature threshold resists heat-related breakdown
• Dramatically reduced bearing wear compared to standard materials
• .010" (0.010 inch) oversize for machined crankshaft journals
• Direct replacement for GM LS-series engines

Silicon aluminum bearing material is widely used by OEM manufacturers due to its proven performance characteristics in high-stress applications. This bearing set is ideal for engine rebuilds, performance builds, and restoration projects requiring oversized main bearings to compensate for crankshaft regrinding or block machining.