LS Gen 3 Iron Block to Gen 4 Timing Chain Tensioner Drill Template Tool Billet Aluminum Adapter for GM LS LQ4 LQ9 LM7 LR4 L59 Engines

This LS Gen 3 to Gen 4 timing chain tensioner drill template tool is designed to assist with upgrading GM Gen III LS iron block engines to accept a Gen IV style timing chain tensioner. It provides accurate hole positioning to ensure proper alignment and reliable installation. The drill guide is CNC machined from billet aluminum for strength, precision, and long term durability. Its smooth finish allows stable positioning during drilling, helping reduce the risk of misalignment when modifying the engine block. This tool is compatible only with GM Gen III LS iron blocks produced between 1999 and 2008, including LM7, LR4, LQ4, L59, and LQ9 engines. It is not compatible with aluminum blocks or Gen IV factory blocks. Suitable for engine rebuilds, performance upgrades, and custom LS projects where a Gen IV timing chain tensioner conversion is required.

• Compatible with GM Gen III LS iron block engines from 1999 to 2008 including LM7 LR4 LQ4 L59 and LQ9
• Designed to drill precise mounting holes for Gen IV timing chain tensioner GM 12626407
• Allows Gen III iron blocks to accept Gen IV style timing chain tensioner upgrade
• CNC machined from billet aluminum for accuracy durability and smooth surface finish
• Package includes one aluminum drill template tool for professional or DIY engine builds