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  See all Engine products
Eagle Specialty Prod 2pc Rear Seal Competition Balanced Rotating Assembly Chevrolet 350 Small Block - B12011040

If you're looking to build a serious racing engine, the Eagle Competition Rotating Assembly has got your back. Eagle really puts in the effort to handpick parts that deliver solid performance and durability without draining your wallet. These assemblies are designed for the hardcore racers out there, especially if you're messing with exotic fuels, nitrous, or forced induction setups.

Let's break it down: you’re getting a 3.750" forged 4340 crankshaft, paired with 6.000" H-Beam rods that are tough as nails. The rods use 7/16" ARP 8740 bolts, which means they’re built to handle the stress. The pistons? They’re forged 4032 Mahle flat tops with a -5cc dome volume, and they come with plasma-moly file-fit rings for a snug fit. Plus, you’ll find King XP rod and main bearings included to keep everything running smoothly.

Features

  • Assembly Balanced: yes
  • Balance Type: internal
  • Connecting Rod Bolt Diameter: 7/16"
  • Connecting Rod Bolt Material: ARP 8740
  • Connecting Rod Design: H-Beam
  • Connecting Rod Length: 6.000"
  • Connecting Rod Material: forged 4340 steel
  • Crankshaft Center Counterweights: no
  • Crankshaft Flange Bolt Holes: 6
  • Crankshaft Main Journal Diameter: 2.449"
  • Crankshaft Material: forged 4340 steel
  • Crankshaft Reluctor: no
  • Crankshaft Rod Journal Diameter: 2.100"
  • Crankshaft Stroke: 3.750"
  • Cylinder Bore Diameter: 4.040"
  • Damper Included: no
  • Flexplate/Flywheel Included: no
  • Main Bearing Type: hardened, narrowed or chamfered
  • Main Bearings Included: yes
  • Oil Rail Support Included: no
  • Piston Brand: Mahle
  • Piston Dome Volume: -5cc
  • Piston Face Type: flat top
  • Piston Material: forged 4032 aluminum
  • Piston Pin Diameter: .927"
  • Piston Pin Type: full floating
  • Piston Ring Gap: file-fit
  • Piston Ring Thickness: 1.0mm, 1.0mm, 2.0mm
  • Rod Bearing Type: hardened, narrowed or chamfered
  • Rod Bearings Included: yes
  • Second Piston Ring Type: reverse twist iron
  • Thrust Washer Included: no
  • Title: Eagle Specialty Products - Balanced Competition Rotating Assembly
  • Top Piston Ring Type: barrel faced plasma-moly
  • Just a heads up, you might need to do some minor clearancing of the block at the pan rails.

Notes:

Universal Fitment: These parts are generally compatible, but it’s always best to double-check your specific application to ensure a proper fit.

Other Part Numbers:
Eagle #eagB12011040

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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