Perfect Circle P-Series Main Bearing Set Undersize Small Block Chevy

Perfect Circle P-Series main bearing sets are tri-metal engine crankshaft main bearings made for engine rebuilds that need more than standard replacement bearings. They suit heavy-duty use, motorsports and street performance builds. This line is the upgrade over standard bi-metal bearings, and it's sold for small block Chevy V8 applications.

Key Features:

• Tri-metal construction: a steel back, a cast copper-lead alloy layer and an electroplated babbitt overlay. The overlay helps reduce friction and resist wear.
• High eccentricity design: helps the bearing accommodate bore distortion in high-load applications.
• High crush factor: helps the bearing seat and stay in place in the block.
• Hardened steel backing: adds strength and resists fretting.
• Thin overlay: handles high loads and resists flaking and fatigue.
• Oil-flow groove design: helps maintain lubrication to the connecting rod bearings.

P-Series bearings are well suited to rebuilders who want better conformability, embedability and fatigue resistance than original-equipment-style bearings offer. Check each individual listing for the exact bearing size and specifications.