Up locks will produce around .050" more installed height over Std locks. (see note below)

Hardened Single Groove Up Locks. Also known as "Offset Locks"

Application: 11/32" Applications

These are sold in half sets of 16 halves which is enough for 8 valves. If you need enough for 16 valves, simply order quantity of two.

We carry a few variations of offset locks. Some for more installed height and some for less.

Up locks are designed to offer MORE installed height. These can be a real problem solver when not enough installed height is available using std locks.

The main reason to use up locks is when there isn't enough installed height w/ Std locks.

These are manufactured with the lock bead moved .050" off center to increase retainer height by around .050" over std locks. (your results may very depending on which locks they are compared to)

Cautions: Up locks will raise the locks location on the valve tip. Engines using self aligning rockers, (LT1, Vortec SBC) will most likely experience clearance issues between rocker rails and the locks topside. Do not use +.050" locks w/ self aligning rockers!

If you look at the pictures, you can see the locator bead is offset.

     Features:

• Hardened to Resist Wear
  
• 7 Degree Lock Angle
• Approximately .050" more installed height over Std Locks
  
• Single Groove Square Bead
  
• Comes with 16 halves.
• Enough for 8 valves.
  

NOTE 1 -The amount of increased installed height obtained is limited to locks they're being compared to. Now a days, std locks are coming from many different sources and their heights vary from one brand to another.

NOTE 2- There are certain applications where +.050" locks should not be used. Applications such as Gen 2 Small Block Chevrolet, Vortec and LT1 w/ self aligning rockers should not use them as retainer and lock clearance issues may result. Do not use +.050" locks w/ self aligning rockers period!

Alex's Parts- The smart choice in valve train parts~