Main Bearing

Manley Main Bearings are engineered to provide reliable support and consistent oil control in high-performance engine applications. Manufactured from premium bearing materials and designed to maintain precise clearances, they deliver excellent load capacity, fatigue resistance, and durability under extreme conditions. Optimized for proper crankshaft support and oil film stability, Manley main bearings help reduce friction and ensure long-term performance in both street and race engines.

Additional Information

Engine Detail: 454 - Series: P - Size: STD - 1 Set for 1 Engine

Part Type

Engine Crankshaft Main Bearing Set

• Backed by Manley Performance's reputation for quality and reliability
• Designed to maintain a stable oil film under high-load and high-RPM conditions
• Ideal for performance street, drag racing, circle track, marine, and endurance engine builds
• Manufactured from premium bearing materials for exceptional durability and wear resistance

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Reference Information

Main Bearings, P-Series, 1/2 Groove, Standard Size, Tri Metal, Chevy, Big Block, Set of 5

Manley offers Clevite main bearings to deliver the high performance you need for your high-revving engines. To compensate for the high-load factors and distortion in these engines, these bearings have higher eccentricity and a high crush factor. Constructed of tri-metal cast copper lead, they have a steel back for support, a cast copper lead lining to withstand the loads of engine operation, an electroplated babbit overlay on the running surface to provide searing surface qualities, and oil grooves for better oiling. For your Manley rotating assemblies, order Clevite bearings for conformability, embeddability, and fatigue resistance.