King Engine Bearings CR874HP010X HP Series Connecting Rod Bearing Set Ford 370 429 460 +0.010"

The King Engine Bearings CR874HP010X is an HP Series connecting rod bearing set designed for Ford 370, 429, and 460 cubic inch engines (16v OHV). This set features King's proprietary Alecular bi-metal aluminum silicon alloy construction, engineered to outperform traditional tri-metal Babbitt overlay bearings in high-load racing and performance applications.

The HP Series was developed specifically for drag racing, tractor pulls, monster trucks, and other high-load, short-duration motorsports where conventional Babbitt overlays tend to extrude, migrate, or get physically displaced by the crankshaft. The bi-metal design eliminates the risk of an exposed intermediate layer damaging crank journals — a common and costly failure mode in tri-metal bearings under extreme conditions. The HP Series is also well-suited for medium-load, long-duration racing such as circle track applications using nodular cast iron crankshafts, as well as street/strip performance builds.

HP Series Construction & Material Specs:

• Bi-metal aluminum silicon alloy with fine micro-bore finish
• 0.015" thick top layer for superior macro-particle embedability and conformability
• 40 Vickers hardness — resists overlay migration and extrusion under extreme loads
• 450°F heat threshold for superior protection against friction and overheating
• Mains are 3/4 grooved for improved oiling to rod journals

King Performance Bearing Features:

• Bull's Eye Tolerance: Industry-leading wall tolerances with all shells matched to 0.0001"
• Increased Bearing Height: Greater rod bearing height improves bearing-to-bore contact, enhances heat transfer, and reduces spin potential at high RPM
• Improved Oiling: Enlarged, chamfered oil holes on main bearings for better lubrication flow
• Medium Eccentricity: Optimizes load distribution and promotes consistent oiling across the journal
• Dowel Holes: Available with or without dowel holes to suit a variety of block configurations
• Narrowed Design: Mains and rods are narrowed to accommodate large-radius crankshafts

Ideal Applications:

• Drag racing, tractor pulls, and monster truck engines requiring high-load, short-duration strength
• Circle track and oval racing engines with nodular cast iron crankshafts
• Street/strip performance builds on Ford FE and 385-series big block engines
• Engines prone to contamination-related journal damage where greater embedability is needed

This set is supplied in a +0.010" oversize (010X) specification, making it suitable for use on reground crankshafts. King Engine Bearings offers one of the widest selections of sizes and clearance options in the industry, ensuring the right fit for even the most demanding high-performance engine builds.