The BTR-VVT-GENIV-LMT4 phaser limiter restricts VVT phaser movement to 4 camshaft degrees on Gen IV LS engines. This minimal phasing range preserves most of the VVT functionality while providing the piston-to-valve clearance needed for large cam lobes in performance builds.

Brian Tooley Racing BTR-VVT-GENIV-LMT4 Includes:

• One billet phaser limiter block (4 cam° limit)

Brian Tooley Racing BTR-VVT-GENIV-LMT4 Features:

• Limits intake cam phaser movement to 4 camshaft degrees, equivalent to approximately 8 crankshaft degrees
• CNC-machined billet aluminum for strength and repeatability
• Maintains partial VVT functionality for improved tuning flexibility and drivability over full lockout
• Specifically tailored to performance camshafts with increased lift and duration in Gen IV LS applications
• Installation requires phaser removal tool and precise alignment for correct operation

Brian Tooley Racing BTR-VVT-GENIV-LMT4 Notes:

• Order quantity is per cam phaser; typically one per engine bank when using dual phasers
• Confirm head and phaser version compatibility before purchase
• Tuning required to account for altered VVT range and cam timing behavior