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Hardened Locks, 351/400M, Includes four groove and single groove

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Product Description

Hardened Locks, 351/400M

Half Four Groove, Half Single Groove to suit 341/400M

There the years of this series engines life, Ford 351/400M used two valve lock variations. Early engines used all four groove valves/locks while later used half four groove and half single.

If you're going through a late 351M or 400M engine and want replace the locks, this would be the correct choice.

All 351/400M engines used 11/32" Valves


  • 16 pieces of four groove locks
  • 16 pieces of single groove locks


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

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