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  See all Engine products
Eagle Specialty Prod 4340 Rod 6.635" BBC Rod - CRS66353D

Forged 4340 Steel H-Beam Connecting Rods

If you're diving into the world of high-performance engines, these Forged 4340 Steel H-Beam Connecting Rods are worth your attention. Designed specifically for the Chevrolet Big Block, they come in at a solid 6.635 inches in length. These rods are built to take a beating, thanks to a two-piece forging process that gives them incredible strength and durability.

What’s really cool about these rods is the attention to detail. They’ve got a fully machined and shot-peened surface, which not only looks good but also enhances their overall performance. The sizing is held to exact tolerances, so you can trust that they’ll fit like a glove in your engine. Plus, they're sold as a weight-matched set, making installation a breeze.

Features You’ll Appreciate:

  • Big End Width: 0.991 inches
  • Bolts: 7/16" ARP 8740 for that extra peace of mind
  • Bushed for Full-Floating Piston Pin: Absolutely, yes!
  • Center to Center Length: A precise 6.635 inches
  • Housing Bore: 2.325 inches
  • Pin End Width: 1.125 inches
  • Pin Size: 0.99 inches
  • Rod Journal: 2.2 inches
  • Torque Specs: Torque to 63 ft-lbs using ARP moly lube only

Now, a quick heads-up: these rods are recommended for competition use. So if you're looking to push your engine to the limits, you've found a solid option. Just make sure to double-check your application to confirm they’ll fit your setup. They’re pretty universal, but a little extra research never hurts!

And just a note for those in California: this product contains nickel, which is known to the state to cause cancer. So, keep that in mind if you're in the Golden State.

In short, if you want to beef up your Chevy Big Block, these rods are a fantastic choice. They’re tough, reliable, and built for serious performance. What more could you ask for?

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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