Perfect Circle CB634P10 Connecting Rod Bearing Set .010 Undersize

The Perfect Circle CB634P10 is a high-quality connecting rod bearing designed for Ford small block V8 engines including 221, 255, 260, 289, and 302 cubic inch applications. This P-Series bearing features .010 inch undersize dimensions for crankshaft journals that have been machined undersize during rebuilding.

Key Features:

• Tri-metal construction with hardened steel backing for superior durability
• Extra-thin electroplated lead-based overlay for excellent conformability
• High eccentricity design compensates for rod bore distortion in high-RPM engines
• High crush factor ensures proper retention in connecting rods
• Dowel holes in lower sections for compatibility with aluminum connecting rods
• .010 inch crankshaft undersize (2.113 inch journal diameter)

Perfect Circle P-Series bearings are engineered for demanding applications including performance rebuilds, motorsports, and heavy-duty use where high engine speeds cause connecting rod bore narrowing. These bearings are sold individually and require proper measurement with plastigauge and torque procedures during installation. Each bearing is precision manufactured to OE specifications, making them suitable for both stock rebuilds and performance applications.