Clevite MS-349P10 P-Series Main Bearing Set Undersize - 010

The Clevite MS-349P10 is a precision-engineered P-Series main bearing set designed for Chevrolet 348-409 cubic inch V8 engines. This set features a .010 inch crankshaft undersize specification, making it ideal for rebuilt crankshafts requiring an undersize bearing to restore proper clearances.

P-Series Construction and Design:

• Tri-metal construction with hardened steel backing for maximum strength and support
• Cast copper-lead alloy intermediate layer to withstand high loads and severe engine operation
• Electroplated lead-tin-copper babbitt overlay on running surface for superior slipperiness and conformability
• Higher eccentricity and high crush factor to compensate for high-load factors and distortion in high-revving engines
• Extended oil grooves on both halves for improved lubrication and oil distribution

Key Features:

• Complete main bearing set for Chevy V8 348-409 engines (1958-1965)
• .010 inch crankshaft undersize for machined crankshafts
• Manufactured to SAE specifications for precision fit
• Ideal for high-performance and competition engine builds

Clevite bearings have been the choice of professional engine builders and racers since 1929, delivering proven performance in NASCAR and IndyCar competition. The P-Series design combines conformability, embedability, and fatigue resistance in a precision bearing that exceeds original equipment standards.