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  • Item #: SBC383_EAGLE_1PC

Small Block Chevy 383 cu in

Eagle Crankshaft

For 1pc rear main seal

(2 piece also available, see our other listings)

This Kit Includes:

 Eagle Crankshaft

King Street Series Rod and Main Bearings

  • Aero-Wing counterweight design increases horsepower by reducing windage
  • Straight shot oil holes
  • Stress-relieved and shot-peened
  • Precision ground and micropolished
  • Cast from Special Space-age Material that is stronger than O.E.M Cast
  • Designed simular to Custom Billet cranks
  • Small Block Rated to 600 Max HP
King Bearings feature a "Bulls Eye" Tolerance:
Bull's Eye Tolerance
Bull’s Eye Tolerance Improves Consistency
Bull’s Eye Tolerance

“Bull’s Eye Tolerance” is how we refer to King’s ultra-tight control of wall thickness tolerance.

Inconsistent shell-to-shell bearing wall thickness can have a negative impact on clearances between the bearing and the journal on main and connecting rod bearings. Engine builders typically find themselves having to compensate for these inconsistencies.

But King has removed the inconsistency factor by using advanced quality control procedures. Utilizing these statistical control methods, we are able to maintain rod and main bearing wall thickness tolerances at an amazingly tight 0.00010". This is far tighter than other manufacturers, who produce bearings with a wall thickness at the crown that can vary by up to 0.00025".

Bull’s Eye Dimensions

There are many benefits to "Bull's Eye" control of wall thickness tolerance:

  • Improved consistency of bearing-to-journal clearance, so you never have to worry about King bearings having the right fit within a set.
  • Superior eccentricity and crush relief values for a better oil "wedge" and less journal wear.
  • Decreased taper across the bearing face, yielding superior wall stability, a more parallel wall and better oil film development.
  • No need to grind cranks "fat" or "thin" to compensate for bearing wall variations.

To keep our prices low, we will ship this item the best way possible. We ship with UPS, FedEx and USPS, and will choose the carrier that has the best rate and service to your area. Your tracking number will tell you how your item will be shipped.

**NOTE: shipping prices listed are for the contiguous 48 US states only. There may be additional postage required to ship items to Alaska, Hawaii, Puerto Rico and other US territories. If additional postage is required, we will contact you through e-mail to let you know. If you live outside of the contiguous US, please request a shipping quote prior to purchase to avoid any delays in shipping your item.

We have been in business for over 30 years building some of the fastest race engines in the southeast with the best parts around. We are excited to now offer these parts to you at affordable prices. Our machinists are the best in the business and our sales staff is friendly and knowledgeable. Please give us a call with any questions about our items, we will be happy to talk to you about your project.


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Price $225.00
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