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Availability: Special Order*
SKU: 623-100
Manufacturer: COMP Cams
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$237.95

Most people believe that the tang inside a valve lock holds the retainer and valve spring in place while the engine is running, but this isn't the case. The cross-section of material in the tang is not strong enough to withstand open spring loads of 1000 lbs. or more. The sole purpose of the tang is to temporarily locate the lock, retainer and spring relative to the valve until the taper of the retainer can nest around the outside surface of the lock. This creates a collet effect that binds the two together. The more spring force exerted on the retainer (as the valve opens), the more force applied by the collet effect to keep the retainer and lock in place. With the emergence of valve sizes other than the standard 5/16", 11/32" and 3/8", it is important to make sure the valve locks match the valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves fit together without a gap, they are too large. If the locks fit tight to the stem and leave a gap between the middle of the lock and the O.D. of the stem, the locks are too small. Our line of stock replacement 7 valve locks for stock engine rebuilds are recommended only for street applications with lighter valve spring loads and are stamped and hardened for superior wear resistance. Also available are machined 7 locks and titanium Super 7 Locks for some applications. They offer the same valve spring location accuracy as our Super Locks without the need to change to 10 degree retainers.

Valve Lock; Keeper; Retainer Lock; 10 Degree; 7 Degree; Steel Retainer; 1 Groove; Valve Keeper; Valve Keeper Set; Valve Lock Set; Locks

Machined Steel Set of 12 - 7 Degree, 8mm, Single Groove Race Locks

623-100 - Valve Locks, EB Hi Perf for GM LS1

Engine Valve Spring Retainer Keeper Kit

12 - 7 Degree, 8mm, Single Groove Locks

COMP Cams Valve Locks Eb Hi Perf For Gm

SpringRetainerKeeper

None

Most people believe that the tang inside a valve lock holds the retainer and valve spring in place while the engine is running, but this isn't the case. The cross-section of material in the tang is not strong enough to withstand open spring loads of 1000 lbs. or more. The sole purpose of the tang is to temporarily locate the lock, retainer and spring relative to the valve until the taper of the retainer can nest around the outside surface of the lock. This creates a collet effect that binds the two together. The more spring force exerted on the retainer (as the valve opens), the more force applied by the collet effect to keep the retainer and lock in place. With the emergence of valve sizes other than the standard 5/16", 11/32" and 3/8", it is important to make sure the valve locks match the valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves fit together without a gap, they are too large. If the locks fit tight to the stem and leave a gap between the middle of the lock and the O.D. of the stem, the locks are too small. Our line of stock replacement 7 valve locks for stock engine rebuilds are recommended only for street applications with lighter valve spring loads and are stamped and hardened for superior wear resistance. Also available are machined 7 locks and titanium Super 7 Locks for some applications. They offer the same valve spring location accuracy as our Super Locks without the need to change to 10 degree retainers.

Valve Lock; Keeper; Retainer Lock; 10 Degree; 7 Degree; Steel Retainer; 1 Groove; Valve Keeper; Valve Keeper Set; Valve Lock Set; Locks

Machined Steel Set of 12 - 7 Degree, 8mm, Single Groove Race Locks

623-100 - Valve Locks, EB Hi Perf for GM LS1

Engine Valve Spring Retainer Keeper Kit

12 - 7 Degree, 8mm, Single Groove Locks

COMP Cams Valve Locks Eb Hi Perf For Gm

SpringRetainerKeeper

None

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Vehicle Fitment

Chevrolet

    Camaro

      2002 Z28 SS - 2002 Z28 - 2001 Z28 - 2001 Z28 SS - 2000 Z28 SS - 2000 Z28 - 1999 Z28 - 1999 Z28 SS - 1998 Z28 SS - 1998 Z28

    Corvette

      2002 Base - 2002 Z06 - 2001 Base - 2001 Z06 - 2000 Base - 1999 Base - 1998 Indianapolis 500 Pace Car - 1998 Base - 1997 Base

Pontiac

    Firebird

      2002 Formula - 2002 Trans Am - 2001 Formula - 2001 Trans Am - 2000 Trans Am - 2000 Formula - 1999 Formula - 1999 Trans Am - 1998 Trans Am - 1998 Formula
*we take fitment seriously and have invested heavily into matching products to your vehicle, but it is up to the end user to confirm products are suitable for their vehicle, legal for them to use for the purposes they intend, and verify fitment upon installation. Many opened products may not be returned, so if fitment is in question, please contact us before ordering. We are not resonsible for any costs incurring from a product not being suitable to an end users application.