The ACL 5M1038H-10 is a main bearing set from ACL's H-Series line, machined to a 0.010 in undersize specification for Small Block Chevy engines. This size is intended for use where the crankshaft main journal has been reground to that 0.010 in undersize dimension, not for a stock journal.
Specifications:
- Type: Main Bearing Set
- Series: H-Series
- Size: 0.010 in Undersize
- Engine Fitment: Small Block Chevy
- Part Number: 5M1038H-10
FAQ
What size is the ACL 5M1038H-10 bearing set?
It is machined to a 0.010 in undersize specification, for use with a main journal that has been reground to that dimension.
What engines does the ACL 5M1038H-10 fit?
It is designed for Small Block Chevy engines.
Is this a Standard-size bearing?
No, it is a 0.010 in undersize bearing, not the Standard-size set.
What ACL series is the 5M1038H-10 part of?
It belongs to ACL's H-Series line of engine bearings.

