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Eagle 4340 Forged Crankshaft 3.554" Stroke Ford 4.6L Modular 1992-2009
$1081.99

If you're diving into the world of performance engines, you’ve probably heard of Eagle Crankshafts. These guys really know their stuff when it comes to building cranks that can handle some serious power without breaking the bank. I’ve used their products myself, and let me tell you, the quality is impressive.

What sets Eagle apart is their forging process. They use a non-twist forging technique, which means you’re getting a crank that’s built to last. Each crank goes through a multi-stage heat treatment, stress relieving, shot peening, and nitriding. All of that adds up to a crank that can take the heat—literally. They even magnaflux and sonic test each one to ensure there are no hidden flaws. You can really feel the difference when you micropolish the journals to a 3 or better R.A. It’s all about that precision, you know?

Now, if you’re pushing your engine towards the 1500 HP mark, this is the crank you want. The forged 4340 steel gives it that extra strength and reliability, especially in demanding applications. The journals are designed with a .125" radius for added durability, but keep in mind that you’ll need to use chamfered bearings to make the most of that feature.

And for those looking to shave off a few pounds, check out the 'Lightweight' versions. The knife-edged counterweights reduce weight and windage, typically cutting down around 5-6 lbs. Every little bit helps when you’re chasing performance!

If you’re not quite at the 1500 HP level, Eagle also offers cast steel crankshafts. They’re a solid alternative to factory options, and with all radii set at .092", you can stick with O.E. style bearings. They’re rated for up to 500 HP, which is perfect for street builds or mild performance setups. Just remember, they’re designed for 28 in-oz. external balance.

Key Specs:

  • Material: Forged 4340 steel
  • Intended balance: Internal
  • Target bobweight: 1600g
  • Stroke: 3.554"
  • Rod journal: 2.086"
  • Rod journal width: 1.900"
  • Main journals: 2.657"
  • Minimum rod length: 5.933"
  • Typical weight: 50 lbs.
  • Flywheel bolts: 8

Fitment:

  • Ford Crown Victoria 1992-2009
  • Ford E-150 1997-2008
  • Ford Expedition 1997-2004
  • Ford Explorer 2002-2009
  • Ford F-150 1997-2000
  • Ford Mustang Bullitt 2008-2009
  • Ford Thunderbird 1994-1997

Note: Just a heads up, you’ll need to balance the crankshaft to match your specific rods and pistons. It’s all about getting that perfect setup for your ride.

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Vehicle
1992-2009
Ford Crown Victoria
1997-2008
Ford E-150
1997-2004
Ford Expedition
2002-2009
Ford Explorer
1997-2000
Ford F-150
1994-1997
Ford Thunderbird

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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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