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King Engine Bearings MB 557HP 030 Main Bearing Set For General Motors 262, 267, 302, 307, 327, 350

Manufacturer

King Engine Bearings

Picture for manufacturer King Engine Bearings MB5013HPSTDX Main Bearing Set For G.m.c. (mark Iii) 5.7l

Part Number

MB 557HP 030
14 reviews
04/19/2034 2:07 PM
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$49.46

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Product Details

King Engine Bearings MB 557HP 030 Main Bearing Set For General Motors 262, 267, 302, 307, 327, 350

King offers 3 levels of main bearings for use in OE Stock, High Performance, and Extreme Performance applications. King main bearings are sold in engine sets.



AM-Series & SI-Series Bearings:
King AM-Series & SI-Series bearings are recommended for OE applications. AM-Series bearings are aluminum-copper-tin plus Alloy on high-strength steel (Bi-Metal). SI-Series bearings are Silicon-Aluminum bearings (Bi-Metal) are designed for Aftermarket Gasoline or Diesel Engine Rebuilding & Performance Engines with OE Crankshafts.

HP-Series Bearings:
King HP-Series bearings are recommended for street and strip high performance applications. These Bi-Metal Silicon Aluminum bearings are designed for blown, turbocharged, NOS, and alcohol-fueled engines using aftermarket crankshafts. These bearings have chamfered oil holes are fit aftermarket cranks machined with a large radii at the edge of the journals. Most main bearings in the HP-Series are 3/4 grooved for improved oiling to the rod journals. Ideal for use in High Load, Short Duration Applications like Drag Racing, Tractor Pulling, Monster Trucks, etc.

XP-Series Bearings:
King XP-Series bearings are for extreme performance in high-load capacity applications. These Tri-Metal copper lead bearings are designed use on cranks with large radii (narrow rod bearings) and feature enlarged, chamfered oil holes with 1/2 grooving (on most main bearings) for uncompromised lower bearing load capacity. Ideal for use in High Load Circle Track & Endurance Applications.

What does the King part number Prefix/Suffix mean


NOTE: The term "Undersize" refers to a thicker bearing which is used when the Crankshaft has been turned down and is now undersized, not the bearing itself. The term "Oversize" is typically a thinner bearing than stock to allow for increased clearance.

Select your application below.

Chevy: Small Block,LS,400ci,Big Block

Chrysler: 318/340ci,426 Hemi/440ci

Ford: 289/302ci , 351C , 351W , 4.6L SOHC (Cast Iron Block) , 4.6L SOHC/DOHC (Aluminum Block) , 4.6L/5.4L SOHC Windsor ,
429/460 Big Block
Main Bearing Set
  • Small Block Chevy
  • HP-Series
  • .030" Undersize

Products specifications

Additional Shell Thickness

+.015in

Crank Undersized

-0.030in

Size

0.30in (0.75mm)

Material

alecular (racing line)

Undersize

030

Flange Oversize

FL STD

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