SKU: M77MB4118VXL24
MPN: MB4118VXL24
The BBC Lower Main Bearing Billet Aluminum Blocks (MPN MB4118VXL24) are specifically engineered for big-block Chevrolet builders who prioritize precision and durability in their engine assemblies. These blocks are essential for applications where reliable main bearing support is critical, particularly in high-performance and competition settings.
Constructed from premium billet aluminum, these lower bearing blocks offer superior dimensional stability and load distribution compared to traditional cast alternatives. This construction resists distortion under extreme conditions, ensuring that the integrity of the main bearings is maintained, which is vital for crank longevity and overall engine performance.
Ideal for BBC 454, 396, 427, and 502 builds, these blocks are designed to support reliability in high-RPM and boosted applications. Their lightweight design of 2.79 lbs per piece provides structural advantages without significant weight penalties, making them a valuable addition for serious engine builders.
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