This Clevite H-Series connecting rod bearing is a standard size, extra oil clearance bearing for small block Chevy engines with custom ground crankshafts. 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. It is sold individually.
Specifications:
- Type: Connecting rod bearing, H-Series performance (sold each)
- Bearing material: tri-metal, TM-77
- Size: standard
- Clearance: 0.001 in extra oil clearance (0.0005 in thinner wall)
- Rod journal: 1.8495 in
- Rod housing bore: 2.008 in
- Dowel pin hole: no
- Design: not narrowed
- Engine: small block Chevy
- Part number: CB1664HX
Engine Application: Small block Chevy V8 with a 1.8495 in rod journal.
FAQ
What engine does the Clevite CB1664HX fit?
It is listed for small block Chevy engines with a 1.8495 inch rod journal and connecting rods with a 2.008 inch housing bore.
What does the X in CB1664HX mean?
The X marks the extra oil clearance version of the H-Series bearing. This part adds 0.001 inch of oil clearance by using a bearing wall that is 0.0005 inch thinner.
Is this sold as a set?
No, it is sold individually (each). A V8 uses eight connecting rod bearings, so order eight for a complete engine.
What does H-Series 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.

