King Engine Bearings CR808HPNDSTDX HP Series Connecting Rod Bearing Set Chevy BBC 369-502

The King Engine Bearings CR808HPNDSTDX is a high-performance connecting rod bearing set designed specifically for Chevrolet Big Block Chevy (BBC) engines displacing 369-502 cubic inches, covering Gen IV, V, and VI configurations. This narrowed, dowel-equipped bearing set features King's HP Series bi-metal construction for demanding racing applications.

HP Series Technology:

The HP Series was engineered for high-load racing applications requiring greater durability than traditional tri-metal bearings with Babbitt overlays. Using King's proprietary Alecular aluminum-silicon alloy structure, these bearings deliver exceptional strength for drag racing, tractor pulls, and similar short-duration, high-stress environments. The bi-metal design also performs excellently in circle track racing with nodular cast iron crankshafts.

Key Features:

• Bulls Eye Tolerance: Industry-leading wall thickness tolerances with all shells matched to 0.0001 inch for consistent performance
• Bi-Metal Construction: 0.015 inch thick aluminum-silicon alloy top layer with fine micro-bore finish
• Superior Hardness: 40 Vickers hardness rating resists overlay migration and extrusion under extreme loads
• High Temperature Resistance: 450°F heat threshold provides superior protection against friction and overheating
• Increased Bearing Height: Improves bearing-to-bore contact and heat transfer while reducing spin potential at high RPM
• Narrowed Design: Optimized for large-radius crankshafts commonly found in performance BBC builds
• Dowel Holes: Pre-drilled for positive bearing location and retention
• Medium Eccentricity: Enables optimal load distribution and improved oil flow
• Enhanced Embedability: Superior ability to absorb contaminants and conform to journal surfaces

Ideal Applications:

• Drag racing and other high-load, short-duration competition
• Tractor pulls and monster truck engines
• Circle track racing with nodular cast iron crankshafts
• Street/strip combinations requiring exceptional durability
• Engines experiencing tri-metal bearing failure due to overlay extrusion or intermediate layer exposure

King HP Series bearings solve common bearing failures in extreme applications, including Babbitt overlay extrusion, intermediate layer exposure, and damage from contaminated oil. The harder aluminum-silicon alloy surface provides protection that traditional tri-metal bearings cannot match in these demanding conditions.