ACL Bearings 8B663HN-020 Race Series Connecting Rod Bearing Set Small Block Chevy .020 Undersize Narrow

ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. These high performance tri-metal engine bearings are designed to withstand higher RPM conditions. The 8B663HN-020 is a narrow connecting rod bearing set specifically engineered for Chevrolet small block applications requiring .020" undersize journals.

Key Features:

• High-strength overlay plate with reduced thickness for improved fatigue properties
• Manufactured to exacting tolerances with particular attention paid to wall thickness accuracy to ensure reliable fit and maintain consistent clearances
• Increased eccentricity to improve shape adaptation to compensate for bore distortion at high speed operation
• Narrow bearing design provides additional edge clearance for crankshafts with exceptionally large fillet radii
• 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 bearings and to maximize the grip between the bearings and its housing

The unique combination of design, metallurgy and engineering provides Race Series performance bearings with the endurance and capability to perform where others cannot. This bearing set is ideal for performance and racing applications in small block Chevy 262, 267, 302, 305, 307, 327, and 350 cubic inch V8 engines with crankshafts that have been ground .020" undersize on the rod journals.