Main Bearing Set Coated BBC 396-454

The ACL BEARINGS Main Bearing Set Coated BBC 396-454 (5M829HC-STD) is a race-series main bearing kit engineered for big-block Chevrolet engines in the 396 to 454 cubic-inch displacement range. This is a premium bearing solution designed for high-performance applications where reliability under extreme load and sustained RPM is non-negotiable. The standard-specification, coated design provides superior lubrication film strength and corrosion resistance across the full range of operating conditions.

ACL's race-series coating technology reduces friction at the bearing interface while enhancing oil retention and wear resistance compared to uncoated bearings. The standard journal diameter configuration ensures proper fit in factory and common aftermarket BBC main saddles without modification. The kit format eliminates guesswork during engine assembly—all bearings are pre-matched and pre-selected for consistent clearance and performance. This is critical in big-block applications, where bearing failure can cause catastrophic engine damage. The compact package (4.5 x 3.5 x 5 inches, 1.69 lbs) makes storage and shipping efficient while keeping all components together and protected.

This bearing set is purpose-built for engine builders, restoration specialists, and performance enthusiasts who are assembling or rebuilding large-displacement Chevrolet V8 engines. Whether the application is street performance, drag racing, or marine service, the coated bearing set delivers the durability and load capacity required when 454 cubic inches and high compression ratios are in play. Choosing OEM-quality bearings during initial assembly or rebuild is a cost-effective investment that prevents bearing wear-related issues down the line.

Big-block Chevrolet engines remain the gold standard in traditional American performance applications. The 396, 402, 427, and 454 variants all share the same main bearing bore diameter and configuration, making this kit compatible across the entire big-block family. Pairing a race-series bearing kit with quality oil and proper maintenance practices ensures the engine will deliver consistent power and reliability throughout its service life.