Specifications
- Brand
- Manley Performance
- Part #
- 14170L-8
- UPC
- 807298105680

Manley Chevrolet Big Block Pro-Series I-Beam Connecting Rod Set - 6.660in Length
$2795.37
Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.
Manley Chevrolet Big Block Pro-Series I-Beam Connecting Rod Set - 6.660in Length. Forged 4340 or 300M steel for ultimate performance.
Key Features
- This set of connecting rods is 6.660 inches long.
- Constructed from forged 4340 or 300M vacuum degassed steel alloys for strength and durability.
- Available in multiple weight options (Tour Lites, Lightweights, Standard, Heavy Weights) to suit specific engine needs.
- Certain SKUs are NHRA Legal certified for Stock and Super Stock racing categories.
- Designed for Chevrolet Big Block engines.
⚠️ 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
Product Details
Forged from either 4340 or 300M vacuum degassed steel alloys, these Manley Pro-Series I-Beam connecting rods are built for serious performance in Chevrolet Big Block engines. With a length of 6.660 inches, they are designed to handle the demands of high-output applications where strength and reliability are paramount. These rods represent a significant step up from stock components, offering the kind of durability and precision that serious engine builders rely on.
Manley offers these Pro-Series rods in various weight options, including Tour Lites, Lightweights, Standard Weights, and Heavy Weights, allowing you to tailor your build precisely to your needs. This attention to detail ensures you can achieve optimal balance and performance within your engine. For those competing in specific racing classes, certain configurations of the Pro-Series I-Beam rods have earned NHRA Legal certification, meeting the standards for Stock and Super Stock categories. This means you can trust their design and construction for competitive use.
When you're building a high-performance Chevrolet Big Block, the connecting rods are a critical link. Choosing Manley's Pro-Series means you're investing in well-built components designed for longevity and power. These rods are a solid option for anyone looking to push their engine's capabilities further, whether for street performance or dedicated racing applications.
Specifications
- Brand
- Manley Performance
- Manufacturer Part #
- 14170L-8
- UPC
- 807298105680
Frequently Asked Questions
You Might Also Like
Similar products from the same category

Manley Billet Timing Chain Kit - Small Block Chevrolet - BBC Snout - Brass Shim

Manley Ford 4.6L / 5.0L H Tuff Series Connecting Rod Set w/ ARP 2000 Bolts (Single)

Manley Billet Timing Chain Kit - Gen IV Small Block Chevrolet - Single Bolt LS3

Manley Pro Series Timing Chain Kit - Big Block Chevrolet
Manley Chevrolet Big Block Pro-Series I-Beam Connecting Rod Set - 6.660in Length
