COMP Cams Conical Valve Spring Kit

2009–2025 Chrysler 300, Dodge Challenger, Charger, Durango, Ram 1500/2500/3500, Jeep Commander, Grand Cherokee – 5.7L HEMI

7228CC-KIT

Overview:

The COMP Cams 0.63in Lift Conical Valve Spring Kit is engineered specifically for Dodge and Chrysler vehicles equipped with the 5.7L HEMI engine from 2009 through 2025. This comprehensive kit is designed to support valve lifts up to 0.630 inches, providing reliable spring pressure and enhanced valvetrain stability for performance enthusiasts and engine builders alike. Ideal for those upgrading camshafts or seeking improved valve control without the need for extensive cylinder head modifications, this kit simplifies installation and ensures consistent performance.

By including all necessary components such as steel retainers, valve locks, seals, and seats, the kit eliminates guesswork and additional machining, making it a straightforward upgrade for your HEMI-powered Chrysler 300, Dodge Challenger, Charger, Durango, Ram trucks, Jeep Commander, and Grand Cherokee models.

Key Features:

This valve spring kit offers a balanced combination of durability, performance, and ease of installation. Key features include:

• Designed for 0.630" maximum valve lift compatibility
• Includes steel retainers, valve locks, seals, and seats for a complete upgrade
• No machine work required for installation, saving time and cost
• Optimized for the 5.7L HEMI engine found in multiple Chrysler, Dodge, Ram, and Jeep models
• Conical spring design reduces harmonic resonance and improves valvetrain stability
• Available with titanium retainers under a separate part number (7228TC-KIT) for weight savings and higher RPM capability
• Compatible with factory and aftermarket camshafts within specified lift range
• Engineered to withstand high-performance and street-driven applications

Construction & Design:

The COMP Cams Conical Valve Spring Kit features high-quality steel springs manufactured to precise tolerances, ensuring consistent spring rates and durability under demanding conditions. The conical design helps reduce valve float and harmonic vibrations by varying coil diameters, which enhances valvetrain control at higher RPMs. Steel retainers provide robust retention and longevity, while the included valve locks, seals, and seats are engineered to fit perfectly with the 5.7L HEMI cylinder heads without requiring machining or modifications.

This thoughtful engineering results in a reliable, drop-in solution that maintains factory valve geometry and sealing integrity while supporting increased valve lift demands.

Installation & Fitment:

Installation of the COMP Cams 0.63in Lift Conical Valve Spring Kit is straightforward and designed to be a direct fit for the specified 5.7L HEMI engines. The kit fits the following vehicles within these year ranges:

• Chrysler 300 (2009–2025)
• Dodge Challenger (2009–2025)
• Dodge Charger (2009–2018)
• Dodge Durango (2009–2025)
• Dodge Ram 1500 (2009–2010, 2011–2025)
• Dodge Ram 2500 (2009–2025, 2011–2018)
• Dodge Ram 3500 (2009–2025, 2011–2025)
• Jeep Commander (2009–2025)
• Jeep Grand Cherokee (2009–2025)

No machine work or cylinder head modifications are necessary, making this kit an excellent choice for both professional engine builders and experienced enthusiasts seeking a reliable upgrade. Proper installation tools and procedures should be followed to ensure optimal spring seating and valve train performance.

What's Included:

• Conical valve springs rated for 0.630" lift
• Steel retainers
• Valve locks
• Valve seals
• Valve seats

Ideal For:

This valve spring kit is ideal for performance enthusiasts upgrading camshafts on their 5.7L HEMI engines who require reliable valve control at moderate to high lifts. It suits street performance builds, mild to moderate track use, and any application where improved valvetrain stability and durability are desired without extensive cylinder head modifications. It is also a great choice for those seeking a hassle-free, drop-in spring upgrade that maintains factory compatibility across a wide range of Dodge, Chrysler, Ram, and Jeep models.

COMP Cams is a leading performance valvetrain manufacturer, known for camshafts and supporting components built for everything from mild street upgrades to full race engines. Their product range covers camshafts, lifters, valve springs, rocker arms, and timing/valvetrain parts—key pieces for dialing in powerband, drivability, and RPM capability.