ACL Bearings 8B745P-40 Connecting Rod Bearing Set Oversize Chevy - 40mm 265 283 302 327

The ACL Bearings 8B745P-40 is a .40mm oversized trimetal connecting rod bearing set designed for Chevrolet small-block V8 engines including 265, 283, 302, and 327 cubic inch displacements from 1955-1967. This bearing set is engineered for engines that have been rebuilt with oversized crankshaft journals, providing proper clearances and optimal performance in performance street and racing applications.

Trimetal Construction Features:

• Copper-lead-tin trimetal metallurgy offers extra durability, load-carrying capacities and dependability required by larger and more powerful engines
• 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 and maximize grip between the bearings and housing
• Increased eccentricity to compensate for bore distortion at high speed operation and assist in the formation of hydrodynamic oil film

ACL bearings are manufactured to exacting tolerances with micron tolerance machining supported by precision measurement systems that deliver consistent accuracy to key characteristics like wall thickness and crush, ensuring reliable fit and consistent clearances. The P-Series trimetal bearings provide excellent performance characteristics for street performance and moderate racing applications where the demands exceed standard bearings but may not require the extreme specifications of ACL's Race Series.

This .40mm oversize bearing set is designed for crankshafts that have been ground to accommodate the larger bearing dimensions, commonly used during engine rebuilding when the original journals show wear or damage. Compatible with 1955-1967 Chevrolet small-block engines with 2.00-inch rod journals.