This Clevite P-Series connecting rod bearing fits the Ford small block V8 in 221, 255, 260, 289 and 302 cubic inch displacements. It is a tri-metal bearing machined 0.030 inch undersize for a crankshaft that has been ground below standard journal size, and it is sold individually.
Specifications:
- Type: Connecting rod bearing, P-Series (sold each)
- Size: 0.030 in undersize
- Material: tri-metal
- Quantity: sold individually
- Engine: Ford small block V8 (221, 255, 260, 289 and 302 cu in)
- Part number: CB634P30
Engine Application: Ford small block V8 (221, 255, 260, 289 and 302 cu in).
FAQ
What engine does the Clevite CB634P30 fit?
It fits the Ford small block V8 (221, 255, 260, 289 and 302 cu in). Confirm your engine and rod journal size before ordering.
Is the Clevite CB634P30 sold as a set?
No, it is sold individually (each). A V8 uses eight connecting rod bearings, one per connecting rod, so order eight for a complete engine.
What does 0.030 undersize mean?
It is a bearing made 0.030 inch thicker than standard for a crankshaft whose rod journals have been ground 0.030 inch below standard size.
What does P-Series mean?
P-Series is Clevite's OE/production-style connecting rod bearing line. This part is tri-metal.

