If you're serious about building a high-performance engine, the Eagle Forged 4340 Steel Crankshaft is a piece you can't overlook. This isn't just any crank; it's made from forged 4340 steel, which means it's tough as nails and ready to handle whatever you throw at it. The non-twist forging process combined with .125" fillet radiuses gives it some serious strength—perfect for those demanding applications that push your engine to the limit.
Now, let’s talk specs. This bad boy has a stroke of 3.622 inches and is designed for internal balance, hitting a target bobweight of around 1800 grams. The rod journal measures 2.100 inches wide with a width of 1.900 inches, while the main journals come in at 2.559 inches. And just so you know, it typically weighs about 55 pounds. It’s built to last and perform, whether you’re on the track or just cruising around.
One thing to keep in mind is the 58-tooth LS9 reluctor that comes included. This is a nice touch for those looking to optimize their timing setup. Just remember, you’ll need to balance this crankshaft to match your specific rods and pistons for the best results.
As for fitment, this crankshaft is designed specifically for the Chevrolet Corvette ZR1 from 2009 to 2013. If you’re rocking one of these beasts, you’re in luck. Just be aware that it requires chamfered or narrowed bearings, and you’ll want to double-check your rear seal and pilot bore diameters since those details can vary.
In short, if you’re looking to push your Corvette to new heights, this crankshaft is a solid choice. It’s built for performance, and it’s ready to take on whatever you’ve got planned.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Chevrolet Corvette | 2009-2013 | Base |
| Chevrolet Corvette | 2011 | Z06 Carbon |
| Chevrolet Corvette | 2013 | 427 |

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 DuplicatedDue 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 ShortcutsThe 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 QualityAll 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 RacingIf 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.