ACL Bearings 1B1665HD-STD Chevy V8 Race Series Rod Bearing Standard Clearance

The ACL Bearings 1B1665HD-STD is a high-performance Race Series connecting rod bearing designed specifically for Chevy V8 engines. Built for special racing applications, this bearing features standard oil clearance sizing and includes a dowel hole location (HD designation) to match specific connecting rod cap configurations.

Race Series Performance Features:

• Tri-metal construction with high-strength overlay plate for superior fatigue resistance
• Hardened steel backs for improved bearing lining support and enhanced retention in the housing
• Increased eccentricity to compensate for bore distortion at high RPM operation
• Elimination of flash plating on the back for improved heat transfer and maximum grip
• Increased crush for improved bearing retention under extreme racing conditions
• Full 180° grooved upper shells with matching partial grooves in lower shells for optimized oil flow
• Tapered groove run-out to smooth oil supply cut-off and prevent pressure pulsing

Precision Engineering:

ACL Race Series bearings are manufactured to micron-level tolerances with tight wall thickness specifications to help maintain consistent oil clearances. The reduced overlay thickness improves fatigue properties while the multi-layer construction delivers high strength and excellent seizure resistance.

Application:

Designed to withstand the extreme demands of high-RPM racing conditions, these bearings are proven in championship-winning engines across NASCAR, IHRA, NHRA, and various other motorsports competitions. The HD designation indicates this bearing features a dowel hole in the lower shell to suit connecting rods with dowel hole locations in the cap.

ACL Race Series bearings are recognized as a premier choice among professional engine builders and race teams worldwide, delivering the endurance and capability required for competitive motorsports applications.