COMP Cams Valve Locks Eb Hi Perf For Gm 623-100 Dirt King lock in/lock out mechanism

lock in/lock out mechanism

Our exclusive 4130 Chromoly Adjuster is CNC gun drilled to reduce weight and Blue Anodized Titanium Hardware shaves even more unsprung weight from the arms

Center bolts and nuts included as pictured for easy install

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COMP Cams Valve Locks Eb Hi Perf For Gm 623-100 Dirt King lock in/lock out mechanismCOMP Cams Valve Locks 623 100 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