What is the main advantage of using 10-degree Super Locks over standard 7-degree locks?

The wider 10-degree angle on these Super Locks helps distribute valve spring loads more evenly across the retainer. This reduces the stress on the lock and retainer, significantly lowering the chance of a 'pull-through' failure, especially with high-performance valve springs.

Are these valve locks compatible with any brand of valve retainer?

These COMP Cams Super Locks are designed to fit any COMP Cams 10-degree retainer. You'll need to ensure your retainer matches the 10-degree angle and that the lock size is correct for your valve stem diameter.

What does '2 and 4 Groove' refer to on these valve locks?

This refers to the grooves on the valve stem itself. Chrysler engines from certain eras used valve stems with either two or four grooves for the valve keeper to engage with. These locks are designed to work with both types.

COMP Cams 10 Degree Valve Locks Set of 16 | 627-16

Name: COMP Cams Super Locks Chrysler 2&4 Groov - Set of 16
Brand: COMP Cams
Price: 66.76 USD
Availability: InStock

COMP Cams Super Locks Chrysler 2&4 Groov - Set of 16

$66.76

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COMP Cams Super Locks for Chrysler 2&4 Groove valves. Set of 16.

Key Features

Fits 76+ vehicle make/model combinations.
Set includes 16 steel 10-degree, 3/8" valve locks.
Designed for Chrysler 2 and 4 groove valve stems.
Wider 10-degree angle helps distribute valve spring loads better than typical 7-degree locks.
Precision machined for accuracy and consistent valve spring installed heights.
Made from a super-tough, fatigue-resistant alloy material.

⚠️ 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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Product Details

If you're rebuilding the top end of a classic Chrysler engine, especially for racing applications, you'll want to pay close attention to the valve keepers. These COMP Cams Super Locks are designed to handle the increased stress from modern, high-performance valve springs. They feature a wider 10-degree angle compared to typical 7-degree locks, which helps distribute spring loads more evenly across the retainer. This reduces the chance of the lock pulling through the retainer under heavy load, a common failure point in high-stress builds.

What sets these apart is that they're precision machined, not stamped. This means tighter tolerances for the relationship between the inside tang and the taper, which helps ensure consistent valve spring installed heights. They're made from a super-tough, fatigue-resistant alloy material, built to last in demanding conditions. These locks fit any COMP Cams 10-degree retainer, so you just need to match them to your valve size and application. They're a popular choice for race applications because of their superior strength and reliability.