Racing Bi-metal For Chevrolet 400 V8 - MB 509HP

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King Bearings developed the HP Series, featuring the Alecular bi-metal composite. The Alecular technology made to better resist extrusion & material migration under high load for short duration or medium load for long duration, particularly in applications such as drag racing, monster truck and tractor pull competitions.
Commonly use for applications requiring a harder than Babbitt top layer to better resist extrusion & material migration (drag racing, monster truck, tractor pull). Also for all other applications using nodular cast iron crankshafts
Crankshaft Dim. Housing Dim. Length Thickness
67.29 / 67.27 mm
2.6493 / 2.6484 inch
72.18 / 72.15 mm
2.8416 / 2.8406 inch
Positions 1,2,3,4:
20.5 mm
0.806 inch

Position 5:
43.7 mm
1.722 inch
2.423 mm
0.0954 inch
Main Bearing Set For CHEVROLET 400 V8 - MB 509HP
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Performance features

Material features

Tech Features

Aluminum Based
aluminum base
Bi Metal Aluminum material

Lead free Aluminum based material used for low to heavy load engines

Bi Metal high Performance

HP-developed mainly for drag race and monster truck applications using nodular cast iron crankshafts.

Greater load surface

A 90⁰ oil groove shape, keep oil flow intact, increases bearing load capacity by expanding the surface area.

Optimal crush height and heat transfer

An optimal crush height value obtained from an optimization process of each performance bearing crush height

Superior hydrodynamic lubrication

An optimized eccentricity value reached through elasto-hydrodynamic analysis and dynamic calculations.

Bulls Eye™
Bull's Eye Tolerance

Outperforms the industry’s wall thickness tolerance, ensuring the least thickness variation shell-to-shell.

Lead free
Lead Free
Environmentally safe composite

A lead-free bearing material prioritizes environmental sustainability and safety, utilizing alternative compounds to achieve optimal performance in diverse applications.

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