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Eagle 639064005 8-Cylinder Engine Rotating Assembly Kit

Manufacturer

Picture for manufacturer Eagle

Part Number

639064005
8 reviews
Sale Price

$2,318.31

Estimated ship date Friday, November 27

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Eagle 639064005 is a complete engine rotating assembly designed for 8-cylinder applications. Eagle Specialty Products rotating assemblies deliver a comprehensive solution for engine builders, supplying all the core rotating components needed for a successful engine build in a single, test-fitted kit.

Kit Includes:

  • Crankshaft (cast or forged depending on specific application variant)
  • Connecting rods — Eagle SIR forged 5140 steel I-Beam or forged 4340 H-Beam rods depending on trim level
  • Pistons matched to bore and compression ratio requirements
  • Piston rings (plasma-moly or standard gap depending on application)
  • Rod and main bearings (King or Clevite)

Key Features:

  • All components are test-fitted in-house by Eagle to ensure proper fit and function before shipping
  • Connecting rods feature ARP bolt hardware for reliable fastening under high-stress conditions
  • Available in balanced and unbalanced configurations — assemblies prefixed with "B" are factory-balanced by Eagle using Hines computerized balancers
  • Externally balanced assemblies include a Pioneer harmonic damper and flexplate
  • Internally balanced assemblies do not include flexplate or damper
  • Designed for V8 engine applications

Eagle rotating assemblies are a trusted choice for street performance, street/strip, and competition engine builds. Each kit is engineered to provide a strong foundation for your 8-cylinder engine build without requiring sourcing of individual components.

Overall experience was good until we had to return the item because it wouldn't work with the seat we had. Problem is that when we tred to get the specs on the item you didn't have any of the measurements available. So I was told that if it didn't work I could retun it. When I did you said it was because I ordered wrong so I would be charged to return it. It was wrong because you didn't have any info on the actual size and the only way to see if it would work was to order it.

Easy peasy - Found what I wanted with free shipping.

The website is easy to use.

Easy to find parts with the manufacture part number. Easy check out.

Price was very reasonable. Original OEM product. Quick ship time. I was very pleased with Boatplicity and I will definitely purchase from them again.

I received my order and was pleased with the shipping container and the way the order was packaged.Very well done. Thanks

It was easy to order and it came in a short time as per ground.

Fast delivery

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