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The Speedmaster valve locks will fit any Speedmaster 10 degree retainer and are recommended for all race applications due to their superior strength
and forged flat-top pistons matched to your bore size
increases valve train life dramatically
These kits include the necessary gaskets for installation
We recommend using our Speedmaster LSD or Full Spool units
1.400" Od. 1.060" Id.(+.050) 10 Deg 11/32 Chromoly Steel Valve Spring Retainers The Speedmaster valve locks willSpeedmaster chromoly steel retainers are made from 4140 chromoly and then heat treated for long life. These retainers are available in a variety of lock angles and sizes to suit your needs, from performance street to competition use. This specific retainer is designed to add to the installed height by . 050 effectively decreasing spring pressure.
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