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Comp Cams Valve Stem Locks


COMP Cams
Comp Cams Valve Stem Locks

Most people believe that the tang inside a valve lock is what holds the valve spring retainer and spring in place while the engine is running, however tangs are not strong enough to withstand today's open spring loads of 1000+ pounds. The tang's sole purpose 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 the "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 5/16", 11/32", and 3/8", it is important to make sure valve locks match 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 are in contact without a gap, the valve locks are for a bigger stem. If the locks fit tight to the stem and leave a gap between the middle of the lock and the stem's outer diameter, the locks are too small for the valves. All locks should be checked before final installation to ensure they're the correct size.

Comp Cams 7° Street Valve Locks are made from stamped, hardened steel. Designed for stock engine rebuilds and only recommended for street use with lighter spring loads. The 7° Race Valve Locks are available in Machined Steel or Titanium. They offer the same valve spring location accuracy as the 10° Super Locks, without the need to change to 10° retainers. Comp Cams 10° Super Locks handle higher spring pressures by distributing load over a larger area. This reduces the chance of a "pull-through" failure. Recommended for all race applications.


86 Products Page: 1 2 3 ... |  Next Results per Page:
Street Valve Locks
  • 7° lock angle

  • 249-601-12
    Street Valve Locks
  • Valve Stem: 11/32"
  • 12/pkg
  • $16.99
    Ships

    249-601-16
    Street Valve Locks
  • Valve Stem: 11/32"
  • 16/pkg
  • $11.99
    Ships

    249-605-16
    Ford 351C 4-Groove Street Valve Locks<
  • 7°li>Valve Stem: 11/32"
  • 16/pkg
  • $20.99
    Order Today Ships 11/04/14

    249-603-12
    Street Valve Locks
  • Valve Stem: 3/8"
  • 12/pkg
  • $16.99
    Order Today Ships 11/04/14

    249-603-16
    Street Valve Locks
  • Valve Stem: 3/8"
  • 16/pkg
  • $11.99
    Ships

    249-606-16
    Chrysler 2-Groove & 4-Groove Street Valve Locks
  • Valve Stem: 3/8"
  • 16/pkg
  • $9.99
    Order Today Ships 11/04/14

    249-604-16
    Chrysler 4-Groove Street Valve Locks
  • Valve Stem: 3/8"
  • 16/pkg
  • $20.99
    Ships
    Race Valve Locks
  • 7° lock angle

  • 249-648-1
    Race Valve Lock
  • Valve Stem: 11/32"
  • 1/pkg
  • $2.69
    Ships

    249-648-12
    Race Valve Locks
  • Valve Stem: 11/32"
  • 12/pkg
  • $22.99
    Order Today Ships 11/04/14

    249-648-16
    Race Valve Locks
  • Valve Stem: 11/32"
  • 16/pkg
  • $27.99
    Ships

    249-623-16
    GM Gen III/LS1/LS2/LS6 Race Valve Locks
  • Valve Stem: 8mm
  • 16/pkg
  • $35.99
    Ships
    Super Locks
  • 10° lock angle

  • 249-618-16
    Valve Locks with Lash Cap Recess
  • 10°
  • Valve Stem: .310"
  • 16/pkg
  • $27.99
    Order Today Ships 11/04/14

    249-617-16
    Valve Locks without Lash Cap Recess
  • 10°
  • Valve Stem: .310"
  • 16/pkg
  • $28.99
    Order Today Ships 11/04/14

    249-610-16
    Valve Locks with Lash Cap Recess
  • 10°
  • Valve Stem: 5/16"
  • 16/pkg
  • $26.99
    Ships

    249-632-16
    Valve Locks - LS1/LS6
  • 10°
  • Valve Stem: 8mm
  • 16/pkg
  • $39.99
    Ships

    249-611-1
    Valve Lock with Lash Cap Recess
  • 10°
  • Valve Stem: 11/32"
  • 1/pkg
  • $2.69
    Ships

    249-611-16
    Valve Locks with Lash Cap Recess
  • 10°
  • Valve Stem: 11/32"
  • 16/pkg
  • $25.99
    Ships

    249-630-16
    Valve Locks with Lash Cap Recess
  • 10°
  • Valve Stem: 11/32"
  • Install Height: -.050"
  • 16/pkg
  • $33.99
    Ships

    249-613-16
    Valve Locks without Lash Cap Recess
  • 10°
  • Valve Stem: 11/32"
  • 16/pkg
  • $26.99
    Ships

    249-614-16
    Valve Locks without Lash Cap Recess
  • 10°
  • Valve Stem: 11/32"
  • Install Height: +.050"
  • 16/pkg
  • $26.99
    Ships

    249-624-16
    Ford 4-Groove Valve Locks
  • 10°
  • Valve Stem: 11/32"
  • 16/pkg
  • $43.99
    Order Today Ships 11/04/14

    249-612-1
    Valve Lock with Lash Cap Recess
  • 10°
  • Valve Stem: 3/8"
  • 1/pkg
  • $2.69
    Ships

    249-612-16
    Valve Locks with Lash Cap Recess
  • 10°
  • Valve Stem: 3/8"
  • 16/pkg
  • $25.99
    Ships

    249-616-16
    Valve Locks without Lash Cap Recess
  • 10°
  • Valve Stem: 3/8"
  • Install Height: +.050"
  • 16/pkg
  • $26.99
    Ships

    249-627-16
    Chrysler 2-Groove & 4-Groove Valve Locks
  • 10°
  • Valve Stem: 3/8"
  • 16/pkg
  • $43.99
    Ships

    249-626-16
    Chrysler 4-Groove Valve Locks
  • 10°
  • Valve Stem: 3/8"
  • 16/pkg
  • $43.99
    Ships

    249-603-1
    Comp Cams 3/8 SINGLE GROOVE LOCK
    $2.69
    Order Today Ships 11/04/14
      249-62-999-3
    C62 CHEV 6 292 REGRIND
    $196.99
    Order Today Ships 11/04/14

    249-623-1
    Comp Cams HI PERF VALVE LOCK FOR GM
    $4.69
    Order Today Ships 11/04/14

    249-623-100
    EB HI PERF VALVE LOCK FOR GM LS1
    $193.99
    Order Today Ships 11/04/14

    86 Products Page: 1 2 3 ... |  Next Results per Page: