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Vivid Racing Gear 
Eagle Specialty Products 4340 Crankshaft - Part Number: 439637666135
Engineered for performance and durability, the Eagle Specialty Products 4340 Crankshaft is a top choice for enthusiasts looking to enhance their Chevrolet 396 or 427 engines. This crankshaft stands out with its robust construction and meticulous design, making it suitable for high-demand applications.
Product Features
- Balance Type: Internal
- Crankshaft Stroke: 3.766"
- Main Journal Size: 2.749"
- Rod Journal Diameter: 2.2"
- Minimum Rod Length: 6.135"
- Material: Forged 4340 Steel
- Target Bobweight: 2350g
- Flywheel Bolt Count: 6
- Snout Diameter: 1.6"
- Rod Journal Width: 2.000"
Benefits
The Eagle 4340 Crankshaft is forged from high-quality 4340 steel, providing superior strength and resistance to wear. The non-twist forging process and .125" fillet radiuses enhance its durability, making it ideal for those who push their engines to the limits. Customers have noted the exceptional balance and smooth operation, which can significantly improve overall engine performance.
Customer Feedback
One satisfied customer shared, "I installed the Eagle crankshaft in my Chevy 396, and the difference is night and day. The power delivery is smoother, and I feel more confident pushing my engine." Another user mentioned, "The quality of this crank is apparent right out of the box. It fits perfectly and has held up under high RPMs without any issues."
Important Notes
It’s crucial to ensure that the crankshaft is balanced to match your specific rods and pistons for optimal performance. While this crankshaft is designed for Chevrolet 396 and 427 engines, we recommend verifying compatibility with your specific vehicle setup.
Warning: This product contains nickel, which is known to the State of California to cause cancer.
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
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.
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