These single groove Machined Steel Street Locks with 7? lock angle and 8mm valve stem size are perfect locks for GM Gen III/LS1/LS2/LS6 applications. It is critically important to make sure valve locks match the 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 fit together without a gap, they are too large. If the locks fit tight to the stem and leave a gap between the middle of the lock and the O.D. of the stem, the locks are too small.

This Part Fits:

Year	Make	Model	Submodel
2004-2007	Cadillac	CTS	V
1998-2002	Chevrolet	Camaro	Z28
1998-2002	Chevrolet	Camaro	Z28 SS
2003	Chevrolet	Corvette	50th Anniversary Edition
2003	Chevrolet	Corvette	50th Anniversary Edition Pace Car
1997-2007	Chevrolet	Corvette	Base
1998	Chevrolet	Corvette	Indianapolis 500 Pace Car
2001-2004	Chevrolet	Corvette	Z06
2006-2007	Chevrolet	Impala	SS
2006-2007	Chevrolet	Monte Carlo	SS
2005-2006	Chevrolet	SSR	Base
2006	Chevrolet	Trailblazer	SS
1998-2002	Pontiac	Firebird	Formula
1998-2002	Pontiac	Firebird	Trans Am
2005-2007	Pontiac	Grand Prix	GXP
2004-2006	Pontiac	GTO	Base