The ACL 5M909HC-001 is a Race Series main bearing set with a coated bearing surface, machined .001 in undersize for a crankshaft main journal that has been machined undersize during an engine rebuild. It is built for Small Block Chevy 267-350 applications.
Specifications:
- Type: Main Bearing Set (Coated)
- Series: Race Series
- Size: 0.001 in Undersize
- Engine Fitment: Small Block Chevy 267-350
- Part Number: 5M909HC-001
FAQ
What engine does the ACL 5M909HC-001 fit?
The ACL 5M909HC-001 is designed for Small Block Chevy 267-350 applications.
What does the ".001 in Undersize" designation mean?
It means the bearing is machined to match a crankshaft main journal that has been machined .001 in undersize during an engine rebuild or regrind.
Is this bearing set coated?
Yes. The ACL 5M909HC-001 features a coated bearing surface, per ACL's part designation for this SKU.

