Cylinder Head DI Hole Elimination Service

The Katech KAT-7742-R01 is a specialized CNC machining service that provides a permanent mechanical solution for eliminating direct injection (DI) injector holes in GM LT1, LT4, LT5, L83, and L86 cylinder heads. This service precisely machines the heads and taps them to accept the necessary sealing bolt and taper washer for a secure installation. This process is ideal for high-performance applications, including those involving high boost pressures, dedicated racing setups, or conversions to permanent port fuel injection or carburetor systems. By removing the DI injectors, the risk of injector plug teflon seal failure, often caused by insufficient fuel cooling, is completely eliminated, ensuring greater reliability under demanding conditions. It's important to note that the pricing displayed for this service typically applies when it is combined with other Katech CNC cylinder head services. For standalone service pricing, customers are advised to contact Katech sales directly. The service is compatible with a range of GM vehicles equipped with the specified LT-series engines, including various years of the Cadillac CTS-V (LT4 6.2L), Chevrolet Corvette Grand Sport (LS3 6.2L), and Chevrolet SS (LS3 6.2L), as well as Corvette Stingray models (LT1 6.2L).