CNC-Motorsports LS LS2 LS3 LSX long blocks designed for performance racers. Our long blocks have become a huge hit among racers of all types worldwide. We use the best name brands such as AFR, Dart, Brodix, Callies, Lunati, CP-Carillo, Crower, Eagle, Scat, JE, Diamond, Mahle and Manley just to name a few. All our long blocks are 100% machined, CNC Machined and blue-printed to our race wining specs. Custom builds available upon request.