LS LS1 LS2 LS3 Machined Steel - 7 Degree, 8mm, Single Groove Race Locks keepers collets

Comp Cams 623-16,  LS Machined Steel Race Locks / Collets / Keepers: 1 Groove, 7° Angle, 8mm Stem Size

SUITS 7° OEM LS1 LS2 LS3 RETAINERS (Holden LS Commodore)

These single groove Machined Steel Race LS Locks with 7° lock angle and 8mm valve stem size are perfect locks for GM Gen III/LS1/LS2/LS6 applications. It is critically important to make sure 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.

Most people believe that the tang inside a valve lock holds the retainer and valve spring in place while the engine is running. This is not 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.

Valve Stem Diameter (in.):  0.314 in.

Valve Stem Diameter (mm):  8.00mm

Lock Style:  7 degree

Lock Groove Quantity:  1/ Single groove

Lock Material:  Hardened steel

Manufacturing Process:  Machined

Recessed for Lash Cap:  No

Quantity:  Sold as a set of 32.

Notes:   Designed to fit LS1 LS2 LS3 engines only. 32 pieces, enough to do 16 valves.