What does the 'STDX' size mean for these bearings?

The 'STDX' designation indicates that these bearings are 0.020 inches undersize. This means they are intended for use with a crankshaft that has been machined down by 0.020 inches during an engine rebuild.

Are these bearings suitable for high-performance applications?

Yes, King Engine Bearings are known for their durability and advanced material overlays, making them a popular choice for both standard rebuilds and performance applications where engine stress is higher.

What is the primary function of main bearings in an engine?

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while maintaining precise clearances, which is essential for proper engine operation and lubrication.

Specifications

Brand: King Engine Bearings
Part #: MB5650TFC20USTDX
UPC: 611500619717

King Engine Bearings Ford 370/429/460 16V Ohv-20 Uppers (Size STDX) Main Bearing Set

Name: King Engine Bearings Ford 370/429/460 16V Ohv-20 Uppers (Size STDX) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-370-429-460-16v-ohv-20-uppers-siz-t14-770883
Price: 195.19 USD
Availability: BackOrder

$195.19

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King Engine Bearings main bearing set for Ford 370, 429, and 460 engines. STDX size.

Key Features

Fits Ford 370, 429, and 460 16V OHV engines.
Main bearing set for the upper position.
STDX size is 0.020 inch undersize for machined crankshafts.
Features King's unique overlay material for improved durability and reduced friction.
Designed to manage heat and oil flow effectively.

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About this part

Product Details

If you're rebuilding the bottom end of your Ford 370, 429, or 460 big block, getting the main bearings right is crucial for engine longevity. These main bearing sets from King Engine Bearings are designed to handle the demands of these powerful V8s. They are specifically made for the upper position in the engine block, ensuring proper crankshaft support.

King uses a unique overlay material that's built for durability and reduced friction. This particular set is the STDX size, which is 0.020 inches undersize, meaning it's intended for crankshafts that have been machined down by 0.020 inches. This is a common practice when rebuilding an engine to ensure a fresh, perfectly round surface for the bearings to run on. The material composition helps manage heat and oil flow, critical for keeping these engines running smoothly under load.

When you're putting together a performance or a heavy-duty rebuild, using well-built bearings like these King units is a smart move. They are a solid option for ensuring your engine's rotating assembly stays properly supported and lubricated.