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Eagle Forged 4340 Crankshaft 3.750" Stroke Chevrolet 305 | 350 Small Block Camaro 1967-1992
$931.99

If you're looking to beef up your engine's performance without breaking the bank, the Eagle Forged 4340 Crankshaft is a solid choice. I've had my hands on these cranks, and they really pack a punch when it comes to strength and reliability. Made from 4340 steel, they go through a rigorous forging process that ensures they can handle the heat—literally. We're talking about non-twist forging, multi-stage heat treatment, and a bunch of other processes like stress relieving and shot peening. This crank is built to last, even in the most demanding setups.

One of the standout features is how each journal is micropolished to a 3 R.A. or better. This kind of finish means less friction and better performance. Plus, with a .125" radius on all journals, you're getting a boost in strength, but keep in mind you'll need to use chamfered bearings to make it work. Designed for internal balance, this crank can handle up to 1500 horsepower, which is pretty impressive for a forged crank.

If you’re looking to shave off some weight, Eagle also offers a 'Lightweight' version. Those knife-edged counterweights can drop about 5-6 lbs, which is a nice touch if you’re aiming for quicker revs and better efficiency.

For those who might not need the full-on forged option, Eagle's cast steel crankshafts provide a reliable alternative to factory cranks. They’re designed with .092" radii, making them compatible with OE bearings and are recommended for setups up to 500 horsepower. Plus, they guarantee a target bobweight within +/- 2%, which is a nice peace of mind for anyone building an engine.

  • Material: Forged 4340 steel
  • Intended Balance: Internal
  • Target Bobweight: 1855g
  • Stroke: 3.750"
  • Rod Journal: 2.1"
  • Rod Journal Width: 1.900"
  • Main Journals: 2.449"
  • Minimum Rod Length: 5.700"
  • Typical Weight: 53 lbs.
  • Snout Diameter: 1.245"
  • Flywheel Bolts: 6

As for fitment, this crankshaft is a great match for a range of Chevrolet models, including:

  • Chevrolet Camaro (1967-1992)
  • Chevrolet Caprice (1977-1993)
  • Chevrolet Impala (1977-1985)
  • Chevrolet Monza (1976-1979)
  • Chevrolet Nova SS (1968-1974)
  • Chevrolet Malibu | El Camino | Monte Carlo (1976-1988)

Just a heads up: You’ll need to balance the crankshaft to match your specific rods and pistons. It's all about that perfect harmony in your engine.

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Chevrolet Camaro 1967-1974, 1977-1987, 1991-1992 Z28
Chevrolet Camaro 1967-1972 SS
Chevrolet Camaro 1967-1973, 1975, 1989-1992 RS
Chevrolet Camaro 1967-1980, 1988 Base
Chevrolet Camaro 1973-1978, 1987 LT
Chevrolet Camaro 1976-1978 LT Rally Sport
Chevrolet Camaro 1976-1980 Rally Sport
Chevrolet Camaro 1979-1986 Berlinetta
Chevrolet Camaro 1981-1987 Sport
Chevrolet Camaro 1982 Z28 Indianapolis 500 Pace Car
Chevrolet Camaro 1985-1990 Iroc-Z
Chevrolet Camaro 1992 RS Heritage Edition
Chevrolet Camaro 1992 Z28 Heritage Edition
Chevrolet Caprice 1977-1993 Classic
Chevrolet Caprice 1977-1978, 1981-1982 Classic Estate
Chevrolet Caprice 1977-1981 Classic Landau
Chevrolet Caprice 1979 Landau
Chevrolet Caprice 1979-1980 Classic Sport
Chevrolet Caprice 1980-1982, 1985-1992 Base
Chevrolet Caprice 1986-1990 Classic Brougham
Chevrolet Caprice 1987-1990 Classic LS Brougham
Chevrolet Caprice 1991-1993 Classic LTZ
Chevrolet Caprice 1993 Classic LS
Chevrolet Chevelle 1976-1977 Malibu
Chevrolet Chevelle 1976-1977 Malibu Classic
Chevrolet Chevelle 1976 Malibu Classic Estate
Chevrolet El Camino 1976-1987 SS
Chevrolet El Camino 1976-1977 Classic
Chevrolet El Camino 1976-1987 Base
Chevrolet El Camino 1977-1978, 1981-1986 Conquista
Chevrolet El Camino 1979-1981 Royal Knight
Chevrolet Impala 1977-1979 Landau
Chevrolet Impala 1977 Custom
Chevrolet Impala 1977-1985 Base
Chevrolet Impala 1979-1980 Sport
Chevrolet Impala 1981-1982 Estate
Chevrolet Malibu 1978-1981 Base
Chevrolet Malibu 1978-1983 Classic
Chevrolet Malibu 1978-1980 Classic Estate
Chevrolet Malibu 1978-1981 Classic Landau
Chevrolet Malibu 1979-1980 Estate
Chevrolet Malibu 1979 Landau
Chevrolet Malibu 1979-1980 Sport
Chevrolet Malibu 1979 Police
Chevrolet Malibu 1979-1980 Classic Sport
Chevrolet Monte Carlo 1978, 1980 Sport
Chevrolet Monte Carlo 1978-1981 Landau
Chevrolet Monte Carlo 1979, 1981-1988 Base
Chevrolet Monte Carlo 1983 CL
Chevrolet Monte Carlo 1986-1988 LS
Chevrolet Monza 1976-1977 Towne Coupe
Chevrolet Monza 1976-1977 Towne Coupe Cabriolet
Chevrolet Monza 1976-1979 2+2
Chevrolet Monza 1976-1977 Towne Coupe Sport
Chevrolet Monza 1976-1979 2+2 Spyder
Chevrolet Monza 1976 Towne Coupe Spyder
Chevrolet Monza 1976, 1978-1979 Base
Chevrolet Monza 1977 Mirage
Chevrolet Monza 1978-1979 2+2 Sport
Chevrolet Monza 1978-1979 S
Chevrolet Monza 1978 Sport
Chevrolet Nova 1969-1974 Base
Chevrolet Nova 1973-1974 Custom

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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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