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  See all Engine products
Eagle Specialty Prod Ford 351 Windsor Competition Balanced Assembly - b14129030
Eagle Specialty Prod Ford 351 Windsor Competition Balanced Assembly - b14129030 - Image 3 Eagle Specialty Prod Ford 351 Windsor Competition Balanced Assembly - b14129030 - Image 2 Eagle Specialty Prod Ford 351 Windsor Competition Balanced Assembly - b14129030 - Image 3

If you're looking to push your racing engine to the next level, the Eagle Competition Balanced Assembly is a solid choice. Eagle really knows their stuff when it comes to picking the right parts that balance performance, reliability, and durability without completely draining your wallet. This assembly is designed for those who want to run their engines hard, whether you're using exotic fuels, nitrous, or forced induction.

Let’s break down what you’re getting here: it features a 4.000" forged 4340 steel crank, 6.250" H-Beam rods, and ARP 8740 bolts that are 7/16" in diameter. The pistons are forged 4032 aluminum with a -20cc inverted dome and a 4.030" bore, paired with plasma-moly file-fit rings. Plus, you’ll find King XP rod and main bearings included, which are a nice touch for those who really want to ensure everything runs smoothly.

Features

  • Assembly Balanced: yes
  • Balance Type: internal
  • Connecting Rod Bolt Diameter: 7/16"
  • Connecting Rod Bolt Material: ARP 8740
  • Connecting Rod Design: H-Beam
  • Connecting Rod Length: 6.250"
  • Connecting Rod Material: forged 4340 steel
  • Crankshaft Center Counterweights: no
  • Crankshaft Flange Bolt Holes: 6
  • Crankshaft Main Journal Diameter: 3.000"
  • Crankshaft Material: forged 4340 steel
  • Crankshaft Reluctor: no
  • Crankshaft Rod Journal Diameter: 2.100"
  • Crankshaft Stroke: 4.000"
  • Cylinder Bore Diameter: 4.030"
  • Damper Included: no
  • Flexplate/Flywheel Included: no
  • Main Bearing Type: hardened, narrowed or chamfered
  • Main Bearings Included: yes
  • Oil Rail Support Included: no
  • Piston Brand: Mahle
  • Piston Dome Volume: -20cc
  • Piston Face Type: inverted dome
  • Piston Material: forged 4032 aluminum
  • Piston Pin Diameter: .927"
  • Piston Pin Type: full floating
  • Piston Ring Gap: file-fit
  • Piston Ring Thickness: 1.0mm, 1.0mm, 2.0mm
  • Rod Bearing Type: hardened, narrowed or chamfered
  • Rod Bearings Included: yes
  • Second Piston Ring Type: reverse twist iron
  • Thrust Washer Included: no
  • Title: Eagle Specialty Products - Competition Rotating Assembly
  • Top Piston Ring Type: barrel faced plasma-moly
  • Just a heads up: you might need to do some minor clearancing on your block.

Notes:

Universal Fitment: These assemblies are pretty versatile, but I always recommend doing a little homework on your specific setup to make sure everything lines up just right.

Other Part Numbers:
Eagle #eagb14129030

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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Who is EAGLE?

EAGLE SPECIALTY PRODUCTS, aka EAGLE, has been at the forefront of developing top-quality engine components. The company officially started back in 1992 but has been developing their product for ten years prior.  Since the company started, it has continuously produced some of the market's best engine components and is widely used by engine builders worldwide.

Imitated But Not Duplicated

Due to the company's success, its products have been imitated by other companies even up to the part numbers. But the similarity ends only up to how they look. EAGLE uses the finest materials and has invested in the most state-of-the-art manufacturing machinery for them to create a product that would be able to take any punishment it is subjected to. It is tested to be superior to other brands and considered the best upgrade for OEM counterparts.

No To Shortcuts

The company sets the benchmark on how valves should be properly made. Using their years of experience creating rods, they have already designed over 200 different rods and 180 crankshafts. The company does not allow cost to compromise its material used, manufacturing process, and quality test. 

High-End Quality

All of Eagle's products are made up of high-quality materials. They use certified 4340 Chromoly steel. Using their own special heat treatment process, they are able to create a product that is much stronger compared to other competitors using the same raw material. 

They manufacture their rods using a 2-piece forging process that allows the rod to be stronger. This process orients the "grain" of the metal to the direction of the stress. Eagle uses a state-of-the-art Sunnen Krossgrinding system that allows them to create perfect cuts and bore consistently. 

Purchase EAGLE rods at Vivid Racing

If you want to upgrade your engine rods to something stronger and more reliable, then EAGLE is the brand for you. With their proven design and formula for creating rods, they have been sought after by top racing teams and engine builders. If they trust Eagle, so can you. Visit Vivid Racing and check out the list of parts specifically for your needs.

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