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The COMP Cams cam phaser limiter tool for GM LT4 engines is used to restrict cam phaser motion on 2015 and newer LT4 units, allowing simultaneous compression of phaser springs to accommodate higher-performance camshaft profiles. It is part of camshaft conversion strategies for increased upper-RPM gains when combined with aggressive camshafts; a complete limiter kit is sold separately.
COMP Cams Cam Phaser Tool GM LT4
