SKU: KEBMB509XPC
UPC: 611500593710
MPN: MB 509XPC
The KING BEARINGS Main Bearing Set Coated SBC with 400 Mains is specifically designed for small-block Chevrolet engines that have been modified to fit 400-cubic-inch crankshaft mains. This bearing set is essential for builders and engine rebuilders who are upgrading stock 283/327/350 platforms to accommodate larger-displacement cranks, which require oversized main bearing journals.
Featuring advanced coated main bearing technology, this set enhances load capacity and reduces friction through specialized polymer and anti-wear surface treatments. The 400 main specification ensures a proper journal fit on oversized cranks, maintaining critical oil film strength under high RPM and boost conditions. Coated bearings also effectively distribute heat, extending bearing life during high-output applications and minimizing startup wear.
Ideal for engine builders and enthusiasts working on small-block Chevrolet platforms with 400-main cranks, this bearing set is perfect for popular stroker combinations and high-displacement builds. Proper installation requires engine honing to ensure optimal performance and durability, making it a vital component for any serious engine project.
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