Finally got through with my 427 sbc build and the problem I'm having is condensation in my evaps on the valve covers and lighty getting in my oil the motor builder said I wasn't getting the engine hot enough and should run it some. The class I run the truck in is mudd racing and I've only had to run one time at each event do to running the fastest time and don't have to run again if I don't want to so I just shut it down until the event is over then crank it up and put it back on the trailer. The bolts were all seal at time of build and I've only ran the motor 4 times in the races changed oil twice so has anyone had this problem before?