The BTR-VVT-GENIV-LMT10 phaser limiter is designed for Gen IV LS engines to restrict variable valve timing (VVT) movement to 10 camshaft degrees of retard. It allows installers to retain the benefits of VVT while achieving the increased piston-to-valve clearance required for aggressive camshaft profiles in high-performance builds.

Brian Tooley Racing BTR-VVT-GENIV-LMT10 Includes:

• One billet phaser limiter block (10 cam° retard setting)

Brian Tooley Racing BTR-VVT-GENIV-LMT10 Features:

• Limits intake cam phaser movement to 10 camshaft degrees retard compared to full OEM range
• CNC-machined billet aluminum construction for strength and precision
• Retains VVT function (though reduced range) for improved drivability and tuning flexibility
• Enables use of large-duration camshafts by increasing piston-to-valve clearance while maintaining cam phasing control
• Install requires appropriate phaser tool to disassemble cam sprocket and secure limiter block

Brian Tooley Racing BTR-VVT-GENIV-LMT10 Notes:

• Ordered individually; quantity depends on engine (one per cam phaser)
• Verify engine compatibility (Gen IV LS cylinder heads and VVT phaser design) before installation
• Retaining VVT range (though limited) still requires mapping and tuning to accommodate altered cam phasing behavior