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  See all Engine products
Eagle Specialty Prod 4340 Rod BBC 6.660" Rod ARP L19 BOLT - CRS66603DL19

If you're diving into serious performance upgrades for your Chevy Big Block, you might want to check out these Forged 4340 steel H-Beam Connecting Rods. I’ve had my hands on these bad boys, and let me tell you, they’re built to take a beating. Crafted from a two-piece forging, they’ve got a fully machined and shot-peened surface that not only looks great but also enhances durability. The precision in sizing is impressive—everything is held to exact tolerances, which is crucial when you're pushing your engine to the limit.

What really sets these rods apart is that they come as a weight-matched set, so you know you’re getting consistency across the board. Plus, they’re equipped with ARP L19 Bolts—these aren’t just any bolts; they’re designed for serious power-handling capability. If you’re planning to take your ride to the track, you’ll want these on your side. They’re recommended for competition use, and I can see why.

Now, let’s talk specs. Each rod measures 6.660 inches in length, with a big end width of 0.99 inches and a pin end width of 1.125 inches. They’re bush for full-floating piston pins, which is a nice touch for smoother operation. The housing bore is 2.325 inches, and the rod journal is 2.2 inches. When you're assembling your engine, don’t forget to torque these to 79 ft-lbs using ARP moly lube—trust me, it makes a difference.

Just a heads-up, these rods are designed with universal fitment in mind, but it’s always a good idea to double-check if they’ll fit your specific setup. A little research goes a long way in ensuring you’re making the right choice for your vehicle.

Overall, if you’re serious about performance and want connecting rods that can handle the heat, these ESP 4340 ROD BBC 6.660" Rods with ARP L19 Bolts are definitely worth considering.

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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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