ACL Bearings 1B743H-01 Race Series Connecting Rod Bearing Big Block Chevy

The ACL Bearings 1B743H-01 is a high-performance Race Series connecting rod bearing designed specifically for Chevrolet Big Block V8 engines including 366, 396, 402, 427, and 454 cubic inch applications. ACL Race series performance bearings are for extreme endurance under harsh conditions.

Advanced Tri-Metal Construction:

ACL race engine bearings feature Trimetal lead, tin, copper and nickel for superior strength and seizure resistance. Featuring tri-metal construction, precision manufacturing, and optimized oil clearances, the bearings minimize power loss while ensuring reliable lubrication at high speeds.

Race-Proven Engineering Features:

• High strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing
• Elimination of flash plating on the back of the bearings to improve heat transfer through the bearing sand to maximize the grip between the bearings and its housing
• Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films
• Tight consistent wall tolerances to help you maintain consistent clearances

Its rod bearings are engineered to withstand extreme connecting rod forces, delivering exceptional wear resistance and smooth operation. Whether you're building a high-RPM race engine or a boosted performance application, ACL Race Series bearings deliver the reliability and durability needed for demanding conditions.