What material are these Manley connecting rods made from?

These Pro Series I-Beam connecting rods are forged from 4340 vacuum-degassed steel alloy. This material is chosen for its excellent strength and durability under high stress conditions common in performance engines.

Are these rods suitable for racing applications?

Yes, Manley's Pro Series I-Beam connecting rods are built for high-performance use. Some specific part numbers within this series are NHRA Legal certified, making them suitable for Stock and Super Stock racing categories.

What does the '+.665' in the product name refer to?

The '+.665' refers to the offset dimension of the connecting rod's big end bore relative to the small end bore. This offset is critical for proper piston and crankshaft alignment in certain engine configurations, particularly some Big-Block Chevy builds.

Specifications

Brand: Manley Performance
Part #: 14173-8
UPC: 807298004310

Manley BB-Chevy Pro Series I Beam Connecting Rod Set 6.800in (+.665) Center to Center

Name: Manley BB-Chevy Pro Series I Beam Connecting Rod Set 6.800in (+.665) Center to Center
Brand: Manley Performance
SKU: manley-performance-manley-bb-chevy-pro-series-i-beam-connecting-rod-set-6-800in--t14-84321
Price: 2224.44 USD
Availability: BackOrder

$2224.44

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Manley BB-Chevy Pro Series I Beam Connecting Rod Set 6.800in (+.665) Center to Center. Forged 4340 steel alloy for high-performance engines.

Key Features

Fits Big-Block Chevy engines with a 6.800 inch center-to-center length and +.665 offset.
Constructed from forged 4340 vacuum-degassed steel alloy for high-strength applications.
Available in multiple weight options including Tour Lites, Lightweights, Standard, and Heavy Weights to suit specific engine needs.
Certain Pro Series I-Beam SKUs are NHRA Legal certified for Stock and Super Stock racing categories.
Manley Performance is known for precision manufacturing and quality control in their engine components.

These connecting rods are designed for Big-Block Chevy engines with specific length and offset requirements. Always verify the 6.800 inch center-to-center length and +.665 offset against your engine build specifications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're building a serious big-block Chevy engine, you need connecting rods that can handle the stress. Manley's Pro Series I-Beam connecting rods are built for just that. This set, part number 14173-8, features a 6.800-inch center-to-center length with a +.665 offset, designed for specific big-block Chevy applications where precise geometry is key.

These rods are forged from 4340 vacuum-degassed steel alloy, a well-built material known for its strength and ability to withstand high cylinder pressures and RPMs. Manley is serious about quality, and their Pro Series line reflects that with meticulous attention to detail throughout the manufacturing process. Some rods in this series even carry NHRA Legal certification, making them a solid choice for competitive racing in Stock and Super Stock classes. You can also find these rods in various weight options, from Tour Lites to Heavy Weights, allowing you to tailor them to your specific engine build and performance goals.

When you're putting together a high-performance engine, the connecting rods are a critical link. Choosing a well-made set like these Manley Pro Series I-Beams means you're investing in reliability and performance for the long haul. Make sure to consult your engine build specifications to confirm this 6.800-inch length and +.665 offset is the correct fitment for your application.