Perfect Circle CB758HXN H-Series Connecting Rod Bearing Set Standard Size +.001 Extra Clearance

The Perfect Circle CB758HXN is an H-Series connecting rod bearing set designed for Pontiac V8 engines featuring 2.249-inch rod journals. This set includes 8 individual rod bearings and is manufactured to standard crankshaft size with +.001 inch extra clearance, making it well-suited for performance engine builds that require slightly looser oil clearances for higher RPM operation and improved oil flow.

H-Series bearings are built to a higher performance specification than standard OEM-style bearings. They feature a hardened steel back with a thin overlay, a medium level of eccentricity, and a high crush factor for a secure, stable fit in the housing bore. Enlarged chamfers provide greater crankshaft fillet clearance, reducing the risk of edge contact on the journal radius. These bearings are manufactured without flash plating, which promotes better initial seating and immediate full oil film coverage.

Key Features:

• H-Series design with hardened steel back and thin overlay
• +.001 inch extra clearance for performance engine applications
• Standard size for 2.249-inch Pontiac rod journals
• Medium eccentricity and high crush factor for precise housing fit
• Enlarged chamfers for superior crankshaft fillet clearance
• Manufactured without flash plating for improved seating
• No dowel hole (suffix "N" designation)

The CB758HXN is cross-referenced with the Clevite/MAHLE CB758HXN and is an ideal choice for street performance and competition engine builds where slightly increased oil clearance is required. These bearings are recommended for engines operating in the medium-to-high RPM range and for use with crankshafts that have oversize fillets.