What materials are the Manley Pro Series connecting rods made from?

The Manley Pro Series I-Beam connecting rods are constructed from vacuum degassed steel alloys. You can choose between forged 4340 or 300M steel alloys, both selected for their strength and durability in high-performance engine applications.

What is the significance of the ARP 625+ head studs included in this kit?

The ARP 625+ head studs are a high-strength fastener system designed to provide a more secure and consistent clamping force on your cylinder heads compared to standard bolts. This is crucial for maintaining proper seal integrity under the high pressures of a performance Hemi engine.

Are there different weight options for these connecting rods?

Yes, Manley offers various weight options for their Pro Series I-Beam connecting rods to cater to different engine build requirements. This specific kit includes the Standard Weight option, but other options like Tour Lites?, Lightweights, and Heavy Weights may be available separately.

Specifications

Brand: Manley Performance
Part #: 14255R6-8
UPC: 807298070056

Manley Chrysler 5.7L Hemi Series 6.125in Standard I Beam Connecting Rod Set w/ARP 625+ Head Stud kit

Name: Manley Chrysler 5.7L Hemi Series 6.125in Standard I Beam Connecting Rod Set w/ARP 625+ Head Stud kit
Brand: Manley Performance
SKU: manley-performance-manley-chrysler-5-7l-hemi-series-6-125in-standard-i-beam-conn-t14-487852
Price: 2666.14 USD
Availability: BackOrder

$2666.14

On Backorder

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Manley Chrysler 5.7L Hemi Series 6.125in Standard I Beam Connecting Rod Set w/ARP 625+ Head Stud kit. High-strength connecting rods for performance builds.

Key Features

This product includes Manley Pro Series I-Beam connecting rods and ARP 625+ head studs.
The connecting rods are made from vacuum degassed steel alloys, available in forged 4340 or 300M.
These rods are designed for Chrysler 5.7L Hemi engines and feature a 6.125-inch length.
Multiple weight options are available, including Standard Weight, to suit different engine builds.
Certain Manley Pro Series I-Beam connecting rod SKUs are NHRA Legal certified.
ARP 625+ head studs are included for secure cylinder head mounting.

This is a performance engine component set for Chrysler 5.7L Hemi engines. Always verify compatibility with your specific vehicle and engine build before installation.

⚠️ 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

This kit includes Manley Pro Series I-Beam connecting rods and ARP 625+ head studs, designed for Chrysler 5.7L Hemi engines. These connecting rods are a critical component for any performance-oriented engine build, handling the immense forces generated during combustion and translating them into rotational power. The inclusion of ARP 625+ head studs ensures a strong and reliable seal for your cylinder heads, which is essential for maintaining compression and preventing leaks under high stress.

Manley's Pro Series I-Beam connecting rods are crafted from vacuum degassed steel alloys, available in either forged 4340 or 300M. This choice of superior materials means these rods are built to withstand significant stress and fatigue, making them a solid option for demanding applications. They are available in various weight options, including Standard Weight, to match the specific needs of your engine build. Some rods in this series also carry NHRA Legal certification, indicating their suitability for competitive racing in Stock and Super Stock classes.

When rebuilding or significantly upgrading your 5.7L Hemi engine, using well-built internal components like these Manley rods and ARP studs is crucial for achieving reliable performance. The 6.125-inch length is a standard specification for many Hemi applications, and the Standard Weight option is often chosen to balance strength with rotational mass. Ensure you consult your engine builder or service manual for specific installation procedures and torque specifications for both the connecting rods and the ARP head studs.