ACL Bearings 8B743P-10 Performance Connecting Rod Bearing Set 0.010" Undersize Big Block Chevy

The ACL Bearings 8B743P-10 is a high-performance connecting rod bearing set designed for Big Block Chevrolet V8 engines including 366, 396, 402, 427, and 454 cubic inch applications. This P-Series bearing set features 0.010 inch undersize dimensions for use with reground crankshafts, making it ideal for engine rebuilds and performance applications.

Race-Proven Trimetal Construction:

• High-strength overlay plate with reduced thickness for improved fatigue resistance
• Hardened steel backing on all rod bearings improves bearing lining support and retention
• Increased crush for superior bearing retention in the housing
• Elimination of flash plating improves heat transfer and maximizes grip
• Increased eccentricity compensates for bore distortion at high RPM

Key Specifications:

• Size: 0.010" undersize
• Material: Tri-metal construction with hardened steel backs
• Standard shaft size: 2.189" - 2.190"
• Set includes 8 bearings (upper and lower halves)
• Wall thickness at crown: 0.0619"
• Overall bearing length: 0.889"

ACL Race Series bearings feature tight, consistent wall tolerances to help maintain precise clearances and enlarged ID chamfers to accommodate large fillet radius performance crankshafts. Engineered for high-RPM conditions and extreme loads, these bearings deliver the durability and reliability demanded by racing and high-performance street applications.