Perfect Circle MB3248VU24

The Perfect Circle MB3248VU24 V-Series Upper Main Bearings are precision-engineered performance engine bearings designed for Chrysler V8 engines including 383, 413, and 440 cubic inch applications from 1959-1973. This set includes 24 individual upper bearing halves, providing engine builders with the flexibility to select-fit bearings for optimal clearances.

Key Features:

• Lead-indium surface alloy provides superior conformability and embeddability
• Unplated hardened steel backing ensures better dimensional accuracy and bore contact
• Low-to-medium eccentricity design for consistent oil film thickness
• Tri-metal construction with cast copper-lead intermediate layer for maximum load capacity
• Single-piece thrust bearing design eliminates need for separate assembled thrust bearings
• Manufactured without flash plating on steel back for improved seating
• Stock journal size for standard crankshaft dimensions

V-Series bearings duplicate the performance characteristics of legendary Vandervell bearings, offering enhanced conformability compared to standard Clevite 77 bearings. The lead-indium overlay provides excellent protection in high-performance and racing applications where superior conformability is critical. Ideal for engine rebuilds, performance builds, and competition applications requiring precise bearing selection.