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King Engine Bearings MB 509XP 030 Main Bearing Set Chevrolet 400 V8

(GMC G2500 1970-80, K1500 1970-80, C1500 1970-80, K2500 1970-80, Jimmy 1970-80, C3500 1970-80, K2500 Suburban 1970-80, K3500 1970-80 + 102 more models)

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB 509XP 030
11 reviews
Sale Price

$118.11

Estimated ship date Friday, November 27

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Fitment guaranteed

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Product Details

The King Engine Bearings MB 509XP 030 is a complete main bearing set designed for the Chevrolet 400 cubic inch small-block V8 engine. This set is precision-manufactured to 0.030" (0.762mm) undersize, making it ideal for engines undergoing a crankshaft regrind or requiring dimensional restoration during a rebuild.

King's XP (Xtreme Performance) series bearings are engineered to exceed the demands of high-performance street, racing, and performance-built engines. They feature an advanced tri-metal construction with a high-strength steel backing, an intermediate copper-lead or aluminum alloy layer, and a precision-electroplated overlay for superior conformability and embedability.

Key Features:

  • Complete main bearing set for the Chevrolet 400 small-block V8
  • 0.030" undersize for use with reground crankshafts
  • XP series tri-metal construction for superior load capacity and durability
  • High-performance bi-metal or tri-metal design with electroplated overlay
  • Tight dimensional tolerances for consistent oil film and reliable bearing clearance
  • Enhanced eccentricity and crush height for improved seating and retention
  • Coated or overlay surface for excellent break-in characteristics
  • Designed for use in high-load, high-RPM performance applications

King Engine Bearings is an ISO-certified manufacturer trusted by professional engine builders and racers worldwide. The MB 509XP 030 set is a go-to choice for anyone rebuilding a Chevy 400 small-block to stock or performance specifications, ensuring long service life and reliable crank support.

Products specifications

Fits

GMC G2500 1970-80, K1500 1970-80, C1500 1970-80, K2500 1970-80, Jimmy 1970-80, C3500 1970-80, K2500 Suburban 1970-80, K3500 1970-80, C15/C1500 Pickup 1970-80, C2500 1970-80, K1500 Suburban 1970-80, K15/K1500 Pickup 1970-80 + 98 more models

Additional Shell Thickness

+.015in

Crank Undersized

-0.030in

Size

0.30in (0.75mm)

Material

pMax Black (racing line)

Flange Oversize

FL STD

Undersize

030

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Great so far. I'll know better once I receive and get to use it.

great and esay experience

Thanks, that was easy

I like the &quot;pay with amazon&quot; quick link

this was a quick and easy order, although they came up in free shipping, i was charged for shipping. BUT, they were the least expensive for what i ordered on the entire web. thanks for being the lowest price!!!

Good

The site was super easy to use and had exactly the product I needed.

simple quick and easy

Excellent service and the cheapest price that I could find anywhere. Ordered on a Sunday and delivered in record time three days later...basic overground shipping. I will deffinately order from here again!

Was able to find parts I needed easily and at a great price!

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