ACL Bearings 8B634HC-001 Race Series Rod Bearing Set CT-1 Coated .001 Oversized

The ACL Bearings 8B634HC-001 is a high-performance connecting rod bearing set featuring Calico CT-1 dry film lubricant coating. This Race Series bearing set is designed with .001 inch oversized clearance, providing optimal clearance for polished crankshaft journals on small block Ford 289-302 Windsor engines.

Race-Proven Performance:

ACL Race Series bearings are standard components in competition engines that have set records and won championships across NASCAR, IHRA, NHRA, and various motorsports disciplines. The unique combination of advanced metallurgy and precision engineering delivers endurance and performance capabilities that exceed standard bearings.

CT-1 Coating Technology:

The Calico CT-1 dry film lubricant coating reduces friction and abrasive wear while providing intermittent dry lubrication during cold starts and oil starvation conditions. This advanced coating is not affected by dust or dirt and has been proven to reduce oil temperatures by 15-20°F. CT-1 coated bearings increase load carrying capacity to 180,000 psi compared to standard performance bearing overlays that withstand 12,000 psi.

Key Features:

• Hardened steel backing for improved support and bearing retention in the housing
• Tri-metal construction combining steel backing, copper-lead alloy layer, and electroplated babbitt overlay
• Elimination of flash plating on bearing backs to improve heat transfer and maximize grip
• Tight consistent wall tolerances for maintaining precise clearances
• Enlarged ID chamfers to accommodate large fillet radius on performance crankshafts
• .0005 inch thinner per half to provide .001 inch extra clearance for standard sized crankshafts
• Complete bearing set included for V8 engine applications

These bearings are ideal for high-performance and racing applications where reliability and durability under extreme conditions are critical.