This block has 3 races on it, NEVER BLOWN UP NO WELDING extremely nice block, we took the motor back in on trade for a new platform the customer wanted, BRAND NEW sleeves (was 4.185 prior because it was in a circle track car big bore small stroke) new sleeves that are 4.110 will need bored honed and minor decking just where we installed the new sleeves, raised cam, current bore 4.110, 55mm roller cam bearings, 350 mains, .903 lifter bores, dry sump, rocket panel rail (wide pan rail) 8.885 current de k height.