King Engine Bearings Chevrolet 396-502 Gen Iv/V/Vi- 6 Upper Fla (Size STDX) Main Bearing Set

When you're rebuilding the heart of your Chevrolet 396, 502, or other big-block engine from Gen IV, V, or VI, you need main bearings that can handle the load. This set from King Engine Bearings includes the six upper thrust main bearings you'll need to get your engine back in top shape. These bearings are specifically designed for the demands of these powerful V8 engines.

King Engine Bearings uses a unique overlay material that's built to withstand the high pressures and temperatures found in performance and heavy-duty applications. The STDX sizing indicates these are 0.0005 inch undersize bearings, which is a common size for crankshafts that have been ground undersize during a rebuild. This precise sizing ensures a proper oil clearance, which is critical for bearing longevity and engine performance. The upper thrust bearings are essential for controlling the crankshaft's end play, keeping it properly located within the engine block.

This set is designed to fit right into your Chevrolet big-block engine, making the installation process as straightforward as possible for a rebuild. Having the correct main bearings is crucial for ensuring your engine runs smoothly and reliably for miles to come. Always refer to your engine's service manual for specific installation procedures and torque specifications.