What material are these connecting rods made from?

These Manley Pro Series connecting rods are available in either forged 4340 or 300M vacuum degassed steel alloys. Both materials are selected for their high strength and durability in performance engine applications.

What does the .025in longer specification mean for my engine?

The .025 inch longer length means this connecting rod is slightly longer than a standard rod for your application. This can be used to adjust piston position in the cylinder bore, affecting compression ratio and piston-to-valve clearance. It's a common modification for fine-tuning engine builds.

Are these connecting rods suitable for racing?

Yes, some specific part numbers within the Manley Pro Series I-Beam range are NHRA Legal, making them compliant for Stock and Super Stock racing categories. The robust construction from forged steel alloys is also well-suited for demanding performance use.

Specifications

Brand: Manley Performance
Part #: 14359-1
UPC: 807298011547

Manley Small Block Chevy .025in Longer LS-1 6.125in Pro Series I Beam Connecting Rod - Single

Name: Manley Small Block Chevy .025in Longer LS-1 6.125in Pro Series I Beam Connecting Rod - Single
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-025in-longer-ls-1-6-125in-pro-series-t14-199880
Price: 259.90 USD
Availability: BackOrder

$259.90

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Manley Pro Series I-Beam Connecting Rod for Small Block Chevy LS-1. .025in longer, 6.125in length.

Key Features

Fits Small Block Chevy LS-1 engines.
This connecting rod is .025 inches longer than standard, with an overall length of 6.125 inches.
Constructed from forged 4340 or 300M vacuum degassed steel alloys for strength.
Available in multiple weight options: Tour Lites, Lightweights, Standard, and Heavy Weights.
Some Pro Series I-Beam SKUs are NHRA Legal for Stock and Super Stock racing.
Features a strong I-beam design.

⚠️ 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

These Manley Pro Series I-Beam connecting rods are made from forged 4340 or 300M vacuum degassed steel alloys, chosen for their strength and ability to handle high-performance engine demands. They are specifically designed to be .025 inches longer than stock, measuring 6.125 inches overall, which can be crucial for achieving specific piston-to-valve clearance or compression ratio targets in a Small Block Chevy LS-1 build.

Manley offers these rods in various weight options, including Tour Lites, Lightweights, Standard, and Heavy Weights, allowing you to match the rod's mass to your engine's intended use and balance requirements. Some specific part numbers in the Pro Series I-Beam line are also NHRA Legal, making them suitable for certain racing classes if that's part of your build plan. The I-beam design is a well-known and strong configuration for connecting rods, balancing strength with weight effectively.

When rebuilding or modifying a Small Block Chevy LS-1, selecting robust connecting rods like these Manley Pro Series units is a key step. They are built to withstand the stresses of performance applications, ensuring reliable operation. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.