ACL 8B663H-009 Race Series rod bearings feature a .009-inch crankshaft undersize specification for compatible Chevrolet large-pin small-block, Gen III/IV LS, and Vortec engine combinations. This non-narrowed performance set uses tri-metal copper-lead alloy construction.
Specifications
- Manufacturer: ACL
- Part number: 8B663H-009
- Series: Race Series
- Bearing type: Connecting rod bearing set
- Application family: Compatible Chevrolet combinations based on the 2.100-inch large-pin rod journal
- Crankshaft undersize: .009 inch
- Material: Tri-metal copper-lead alloy
- Dowel pin holes: No
- Narrowed bearings: No
- Quantity: Set of 8
Construction Features
- Hardened steel backing supports the bearing lining.
- Increased crush helps retain the bearings in the housing.
- No flash plating on the bearing backs supports heat transfer and housing grip.
- Increased eccentricity accommodates bore distortion at elevated RPM.
- Closely controlled wall tolerances support consistent clearances.
Before Ordering
This is the .009-inch undersize version, not a standard-journal bearing set. The 2.100-inch dimension identifies the nominal journal family, not the required finished journal dimension for this undersize set.
Match 8B663H-009 to your crankshaft and connecting rods. Verify finished journal dimensions, rod housing dimensions, and assembled oil clearance during assembly. Contact 3V Performance for help confirming sizing and application before ordering.