What is the purpose of valve locks?

Valve locks, also known as keepers or retainers, work with the valve retainer to hold the valve spring assembly onto the valve stem. They create a collet effect that binds the retainer and lock together, especially under high spring pressure.

How do I know if these valve locks are the correct size for my valves?

When properly installed, there should be a small gap between the two halves of the lock. If the halves fit together with no gap, they are too large. If they fit tightly to the stem and leave a gap between the middle of the lock and the stem's outer diameter, they are too small.

Are these valve locks suitable for high-performance racing engines?

COMP Cams recommends these specific machined steel 7-degree locks for street applications with lighter valve spring loads. For more demanding applications with higher spring loads, COMP Cams offers other options like their titanium Super 7 Locks.

COMP Cams Machined Steel Valve Locks 7 Degree Set of 100

Name: COMP Cams Valve LocksEb Mach Stl 7Deg S - Set of 100
Brand: COMP Cams
SKU: comp-cams-comp-cams-valve-lockseb-mach-stl-7deg-s-set-of-100-t14-4393218
Price: 186.89 USD
Availability: BackOrder

COMP Cams Valve LocksEb Mach Stl 7Deg S - Set of 100

$186.89

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams Machined Steel Valve Locks, Set of 100. Essential for proper valve train assembly during engine rebuilds.

Key Features

Set of 100 COMP Cams Machined Steel Valve Locks.
Designed for 7-degree valve retainers.
Features a 3/8" stem diameter and single groove design.
Machined steel construction offers good wear resistance.
Ensures proper collet effect for secure valve train assembly.
Recommended for street applications with lighter valve spring loads.

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Product Details

When you're rebuilding the top end of an engine, getting the valve train components seated correctly is critical. These COMP Cams Machined Steel Valve Locks are designed to work with 7-degree retainers and are a key part of securing the valve retainer and spring assembly to the valve stem. They are sold in a set of 100, which is typically enough for a V8 engine.

These locks are machined from steel and feature a 7-degree angle, matching the angle of the retainer they'll interface with. The design ensures that as spring pressure increases, the retainer and lock bind together securely, keeping the valve train stable. While they are stamped and hardened for good wear resistance, COMP Cams recommends these for street applications with moderate spring loads, distinguishing them from their higher-performance titanium options.

It's important to ensure these locks fit the valve stem correctly. There should be a small gap between the two halves of the lock when properly seated on the valve stem. If they fit together without a gap, they are too large, and if they leave a gap between the middle of the lock and the stem's outer diameter, they are too small. Proper fitment is essential for the collet effect that holds everything in place.