ACL Bearings 8B634HC-STD Race Series Rod Bearing Set with CT-1 Coating

The ACL Race Series 8B634HC-STD is a high-performance connecting rod bearing set designed for Ford small block V8 engines including 255, 289, and 302 cubic inch applications. This H-Series bearing features Calico CT-1 Coating, a dry film lubricant coating that helps reduce friction and abrasive wear. Manufactured to exacting tolerances with particular attention paid to wall thickness accuracy to ensure reliable fit and maintain consistent clearances.

Key Features:

• Hardened steel backs on all rod bearings to improve support of the bearing lining and assist with bearing retention in the housing
• Elimination of flash plating on the back of bearings to improve heat transfer and maximize grip between bearings and housing
• Tight consistent wall tolerances to help maintain consistent clearances
• Enlarged ID chamfers on bearing edges to accommodate large fillet radius on performance crankshafts
• CT-1 coating specifically engineered to withstand the extreme conditions of today's high performance engines
• Standard size (STD) bearing set for stock or standard crankshaft journals

The unique combination of design, metallurgy and engineering provides Race Series performance bearings with the endurance and capability to perform where others cannot. These bearings are designed for extreme endurance under harsh conditions, including high RPMs and big boost applications where fatigue, stress wear, and failure are major concerns.