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Eagle Forged 4340 Crankshaft 4.25" Stroke Chrysler RB New Yorker 1972-1979
$1119.99

Eagle Forged 4340 Crankshafts: Built for the Real World

Hey there, gearheads! If you're looking for a crankshaft that can handle some serious power without breaking the bank, let me tell you about the Eagle Forged 4340. These bad boys are forged from SAE 4340 steel, which means they’re tough enough to take on engines pushing up to 1500 horsepower. Yeah, you read that right—1500 HP! Perfect for those of you who like to crank things up a notch.

What sets these cranks apart? Well, they go through a rigorous multi-stage heat treatment process, stress relieving, shot-peening, and nitriding. That’s just a fancy way of saying they’re built to last. Each journal is micropolished to a 3 Ra or better, ensuring smooth operation. And with a .125" radius on all journals, you’ll need to use chamfered bearings, but that’s just a small price to pay for the strength you’re getting.

Now, if you’re into lightweight setups, check out the 'Lightweight' versions. The counterweights are knife-edged, which cuts down on weight and windage—typically shedding about 5-6 lbs. That’s a nice little bonus if you’re trying to squeeze every bit of performance out of your ride.

Here’s the nitty-gritty:

  • Material: Forged 4340 steel
  • Intended balance: Internal
  • Target bobweight: 2500g
  • Stroke: 4.250"
  • Rod journal: 2.2"
  • Rod journal width: 2.05"
  • Main journals: 2.75"
  • Minimum rod length: 7.100"
  • Typical weight: 68 lbs.
  • Snout diameter: 1.531"
  • Flywheel bolts: 8

Fitment:

  • Chrysler New Yorker 1972-1979
  • Chrysler Newport 1972-1979
  • Chrysler Town and Country 1972-1979
  • Dodge Charger 1972-1979
  • Dodge Challenger 1970-1971
  • Dodge Monaco 1972-1979

Important Note:

Just a heads-up: you’ll need to balance the crankshaft to match your specific rods and pistons. It’s a crucial step to getting everything running smoothly.

So if you're ready to take your engine build to the next level, the Eagle Forged 4340 Crankshaft is a solid choice. It’s tough, reliable, and ready to handle whatever you throw at it. Happy wrenching!

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Vehicle
1972-1979
Chrysler New Yorker
1972-1979
Chrysler Newport
1975-1979
Chrysler Town & Country
1970-1971
Dodge Challenger
1972-1978
Dodge Charger

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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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