What material are these connecting rods made from?

These Manley Pro Series connecting rods are made from vacuum degassed 4340 steel alloy. This material is known for its strength and durability, making it suitable for high-performance engine applications.

Are these rods a direct replacement for all Small Block Chevy LS-1 engines?

These rods are specifically designed for Small Block Chevy LS-1 engines and are .025 inches longer than the stock length. It's important to verify that this specific length and design are appropriate for your particular engine build and application.

What does 'Standard Weight' mean for these connecting rods?

Standard Weight refers to a balance between strength and rotating mass. Manley offers various weight options, and the standard weight is a popular choice for many performance builds where durability is key without adding excessive weight to the rotating assembly.

Specifications

Brand: Manley Performance
Part #: 14559-8
UPC: 807298086309

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

Name: Manley Small Block Chevy .025in Longer LS-1 6.125in Std Weight Pro Series I Beam Connecting Rod Set
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-025in-longer-ls-1-6-125in-std-weight-t14-25411
Price: 2079.22 USD
Availability: BackOrder

$2079.22

On Backorder

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

Key Features

This is a set of 8 connecting rods.
Each rod measures 6.125 inches in length.
These rods are .025 inches longer than the standard LS-1 length.
Constructed from vacuum degassed 4340 steel alloy for strength.
Features an I-beam design for a good strength-to-weight ratio.
Available in standard weight for balanced performance.

⚠️ 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 vacuum degassed 4340 steel alloy, a strong material chosen for high-performance engine builds. They are .025 inches longer than stock, measuring 6.125 inches overall, and are specifically designed for Small Block Chevy LS-1 engines. This set is considered standard weight, meaning it balances strength with reasonable rotating mass for a wide range of applications.

Manley builds these rods with a focus on precision and durability. The I-beam design is a popular choice for performance applications because it offers a good strength-to-weight ratio. For those looking to race, certain part numbers in the Pro Series line are NHRA legal, which can be important for Stock and Super Stock classes. You can also find these rods in different weight options, like Tour Lites, Lightweights, and Heavy Weights, to better match your specific engine build and performance goals.

When you're rebuilding or upgrading a performance engine, the connecting rods are critical components that handle immense forces. Choosing a well-made rod from a reputable brand like Manley is a solid step towards building an engine that can reliably produce power. Make sure to consult your engine builder or service manual for specific installation requirements and torque specifications for your application.