bought used 460 c.i. motor was told had less than 50,000 miles and ran good when pulled. When mechanic recieved the motor it had mud all over the back of it ,like it was sitting in the mud.Then, when he had on hoist, he tried to turn it over and it jammed halfway trough stroke.It took this guy over a week (because he "wasn't in") to come pick the motor back up to "get it checked out".Over a week later (once again because he was "unavailable"), he says one of the pushrods are bent and then accuses mechanic of losing pushrods.Last time I checked, you don't take the top of a motor apart to swap them in a vehicle! This guy is a crook!