What does '0.040 inch undersize' mean for these bearings?

This means the bearings are manufactured to be slightly smaller than standard size. They are intended for use when the engine's crankshaft journals have been machined down by 0.040 inches to remove wear or imperfections.

What is the material of these bearings?

These bearings are made with a bimetal construction, featuring an aluminum silicon base. This type of material is chosen for its ability to withstand engine loads and heat.

Are these bearings a direct replacement for all 350ci engines?

These bearings are designed for specific 350 cubic inch engines from General Motors and other manufacturers, and they are 0.040 inch undersize. Always verify your specific engine's requirements and crankshaft condition before ordering.

King Engine Bearings GM 215CI/265CI/301CI/340CI/350CI Connecting Rod Bearing Set

Specifications

Brand: King Engine Bearings
Part #: CR811SI040
UPC: 611500526206

King Engine Bearings GM 215CI/265CI/301CI/340CI/350CI Connecting Rod Bearing Set

Name: King Engine Bearings GM 215CI/265CI/301CI/340CI/350CI Connecting Rod Bearing Set
Brand: King Engine Bearings
Price: 38.73 USD
Availability: InStock

$38.73

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King Engine Bearings GM 215-350CI Connecting Rod Bearing Set. This 0.040 inch undersize set is crucial for engine rebuilds.

Key Features

Fits a wide range of General Motors 215CI, 265CI, 301CI, 340CI, and 350CI engines, as well as many Jeep, Land Rover, MG, and other vehicle applications.
This is a connecting rod bearing set designed for engine rebuilding.
Features a bimetal construction with an aluminum silicon base for durability.
The bearings are 0.040 inch undersize, intended for use with a machined crankshaft.
Proper oil clearance is maintained when installed on a crankshaft machined to the correct undersize specification.

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Will this fit your vehicle?

Product Details

If you're rebuilding an engine for a classic General Motors vehicle, or even some older Jeeps, Rovers, or MGs, getting the connecting rod bearings right is a critical step. These King Engine Bearings are a bimetal set, meaning they use an aluminum silicon base. This construction helps them handle the loads and heat generated during engine operation, especially in those older, larger displacement engines like the 215, 265, 301, 340, and 350 cubic inch displacements.

This particular set is sized 0.040 inches undersize. This means they're designed to be used when the crankshaft journals have been machined down by 0.040 inches to clean up wear or damage. Using the correct undersize bearing is essential for achieving the proper oil clearance, which is vital for engine longevity and performance. King is a well-known name in engine bearings, and this set is a solid option for many rebuild projects across a wide range of vehicles from the 1960s through the early 1980s.