Someone at the factory got their CNC machining programs mixed up between Hemi and Wedge. They'll need to inspect all the blocks on the floor to figure out when the program got mixed up and how many blocks were made wrong. Hate to see stuff like that get out the door. Costs 10x as much to fix once the parts leave the dock.
Costs 10x as much to fix once the parts leave the CNC machine. Once it's moved off the setup, it takes some work to get it dialed in again. They should rebate some of the cost of the block to compensate, say half price?
