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Eagle Specialty Prod BUICK V6 4140 STROKER CRANK - 523136255967
Eagle Specialty Prod BUICK V6 4140 STROKER CRANK - 523136255967 - Image 6 Eagle Specialty Prod BUICK V6 4140 STROKER CRANK - 523136255967 - Image 2 Eagle Specialty Prod BUICK V6 4140 STROKER CRANK - 523136255967 - Image 3 Eagle Specialty Prod BUICK V6 4140 STROKER CRANK - 523136255967 - Image 4 Eagle Specialty Prod BUICK V6 4140 STROKER CRANK - 523136255967 - Image 5 Eagle Specialty Prod BUICK V6 4140 STROKER CRANK - 523136255967 - Image 6

Eagle Forged 4140 Steel Crankshaft for Buick 231CID 3.8L V6

If you're looking to enhance the performance of your Buick 231CID 3.8L V6, the Eagle Forged 4140 Steel Crankshaft is a solid choice for serious gearheads. Designed with competition in mind, this crankshaft features a non-twist forging process, ensuring exceptional strength and durability. The .125" fillet radiuses allow for a perfect fit with chamfered and narrowed bearings, while the nitrided surface and micropolished finish provide added resilience against wear.

Fitment

This crankshaft is specifically engineered for the Buick 231CID 3.8L V6 engines. With a stroke of 3.625", it’s designed for internal balance, making it a great upgrade for those who want to push their engine to the next level. Whether you're building a street machine or prepping for the track, this crankshaft will deliver the performance you need.

Technical Specifications

  • Balance Type: Internal
  • Crankshaft Stroke: 3.625"
  • Engine Stroke: 3.625"
  • Flywheel Bolt Count: 6
  • Main Journal: 2.499"
  • Material: Forged 4140 Steel
  • Minimum Rod Length: 5.967"
  • Rod Journal: 2.248"
  • Rod Journal Width: 0.86"
  • Target Bobweight: 880g

Installation Notes

Keep in mind, the crankshaft must be balanced to match your specific rods and pistons for optimal performance. This step is crucial for ensuring smooth operation and longevity of your engine.

Customer Feedback

Buick enthusiasts have noted that upgrading to the Eagle Forged crankshaft significantly improved their engine's responsiveness and overall power delivery. One owner mentioned, "After installing this crankshaft in my '87 Buick Regal, I instantly noticed a difference in the way the engine revs — it feels much more alive!"

Important Notes:

Universal Fitment: While this crankshaft is designed specifically for the Buick 231CID 3.8L V6, we recommend verifying compatibility with your specific model and year. Doing your homework will ensure a seamless installation and performance boost.

This product contains nickel, which is known to the State of California to cause cancer. Please review the Prop 65 warning for more information.

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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