This Cloyes 9-3678X5Z High-Performance Billet Timing Set eliminates the tensioner on GM LT Engines equipped with VVT (Variable Valve Timing). It replaces the chain and crankshaft sprocket to tighten the chain fitment, eliminating slack.

Cloyes 9-3678X5Z High-Performance Billet Timing Set Features:

• All-out double roller Z-Chain is high-strength steel with proprietary heat-treat processing and is the most durable and dependable chain available today. The fine blanked links reduce stress risers, thus reducing fractures under severe load
• Billet 5-Keyway crank sprocket provides plus or minus 5 degrees of timing adjustability
• (2) Diamond-impregnated thrust washers reduce friction
• High-strength guide eliminates factory tensioner
• Center distance is corrected to reduce chain slack
• The oil pump spline drive has been precision machined for durability