This Clevite H-Series connecting rod bearing is a 0.010 in undersize, narrowed bearing for Chevrolet small block V8 and GM LS-series V8 engines. It is sold each. Clevite H-Series performance bearings use a medium level of eccentricity, high crush, a hardened steel back and a thin overlay, and are made without flash plating for better seating. They are intended for crankshafts with oversize fillets and for engines that run in the medium to high RPM range.
Specifications:
- Type: Connecting rod bearing (sold each), H-Series performance
- Construction: tri-metal, hardened steel back and thin overlay
- Size: 0.010 in undersize
- Design: narrowed
- Engine: Chevrolet small block V8 and GM LS-series V8 engines
- Part number: CB663HN10
Engine Application: Chevrolet small block V8 and GM LS-series V8 engines. Clevite fitment data lists many GM passenger cars and trucks. Confirm against your engine before ordering.
FAQ
What engine does the Clevite CB663HN10 fit?
It fits Chevrolet small block V8 and GM LS-series V8 engines. Confirm against your engine before ordering.
What does the suffix in CB663HN10 mean?
H-Series is Clevite's performance bearing line. It uses a harder, higher-crush tri-metal construction designed for medium-to-high RPM use and crankshafts with oversize fillets. A narrowed bearing has reduced width to increase fillet clearance on the crankshaft.
How many do I need?
This bearing is sold each. A V8 has eight connecting rods, so order the quantity your build needs.
What does 0.010 undersize mean?
It is a 0.010 inch undersize bearing, made for a crankshaft journal that has been ground 0.010 inch under standard. Measure your journals before ordering.

