The LS7 427ci competition short block uses a new GM LS7 block with 4.125" bore to produce the 427CI. This is a great replacement engine for your Z06 Corvette but can be built to work in just about any car.
This engine is a great foundation for street or mild race applications
We are able to build your engine to match just about any specs you desire, so if you do not see it just ask us! When you purchase one of our LS HP or Hot Rod Series Street Engines you will receive a full spec sheet listing the exact components your engine was built with. We will also provide you with a complete Set Up Guide as well as full phone tech support to aid you with the installation process. It is mandatory for you to contact Golen Engine Tech Support before starting your engine for the first time and you can reach our Tech Support Line at 1-800-591-9171 ext 2. Feel free to contact us anytime for help choosing the perfect performance engine combination!!