6.6L L8T Gen V LT Cast Iron Block, Fully Machined 388 LS Engine ARP Pro Series kits are

ARP Pro Series kits are also available with 12-point nuts

Heavy Duty H-Beam Rods

Reduces engine bay temperatures

Cloyes timing chain dampener

Final Wash and Assembly

6.6L L8T Gen V LT Cast Iron Block, Fully Machined 388 LS Engine ARP Pro Series kits areBoostline Performance proudly introduces our premium line of machined 6. 6L L8T GM engine blocks precision engineered for serious performance builders who demand reliability under extreme conditions. Perfect for the customer who wants to build their own engine and needs a good foundation to start with. Each block starts as a seasoned Genuine GM L8T Engine Block then undergoes our proprietary machining process on state of the art Rottler CNC equipment.