Skip to contentThe LBZ succeeded the LLY engine in 2006 and was short lived, being replaced by the LMM in mid-2007. Some notable changes included an upgraded CP3 fuel pump for higher rail pressure and a lower compression ratio which eliminated issues with connecting rod failure in modified LLY’s. Part of the reason for the short life of the LBZ was emissions – the LBZ engine has an EGR system but lacks all of the other exhaust emissions components.The LBZ produced 360hp and 650lb-ft. of torque. It’s lack of emissions systems and easy power gains make it common to modify. While these power...…Skip to contentThe LBZ succeeded the LLY engine in 2006 and was short lived, being replaced by the LMM in mid-2007. Some notable changes included an upgraded CP3 fuel pump for higher rail pressure and a lower compression ratio which eliminated issues with connecting rod failure in modified LLY’s. Part of the reason for the short life of the LBZ was emissions – the LBZ engine has an EGR system but lacks all of the other exhaust emissions components.The LBZ produced 360hp and 650lb-ft. of torque. It’s lack of emissions systems and easy power gains make it common to modify. While these power...WW…