Name: ACL 1955-1967 Chevy V8 265/283/302/327 .40mm Oversized Main Bearing Set
Brand: ACL
Price: 57.96 USD
Availability: InStock

Question 1

What does 'oversized' mean?

Accepted Answer

An oversized bearing is for an engine that has already been machined. When an engine is rebuilt, the machine shop may need to grind the crankshaft or bore out the block. Oversized bearings compensate for this extra clearance.

Question 2

How do I know if I need oversized bearings?

Accepted Answer

You'll need to measure the crankshaft and block. If they are within factory specs, use standard-size bearings. If they have been machined, measure the new size and choose the appropriate oversized bearing.

Question 3

What happens if I use an oversized bearing on a stock crank?

Accepted Answer

The bearing clearance will be too tight, which can cause oil starvation and bearing failure. Always plastigage your clearances to confirm proper fitment.

ACL 1955-1967 Chevy V8 265/283/302/327 .40mm Oversized Main Bearing Set

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