cj, there is quite a discussion on this board about oil pump failures, you can look around and see if you can find it, should be easy, but I'll ask a question first, when you rebuilt the motor, did you use a Felpro gasket set and did you put the kit gasket into the oil pump between the pump body and the backing plate? In my experience this is the problem with the pumps, the Felpro kit gasket is too thin, when the engine gets warm the pump expands and th distance between the rotor and the backing plate shrinks due to heat. That locks up the pump and causes the problem you have, you can ask me how I know but I think you figured that out. My suggestion is to call John at Midwest MIlitary, he usually has NOS pump gaskets in stock, when you get it you will see that it is quite a bit thicker than the one in the Felpro kit. I put a NOS gasket in my rebuild 3500 miles ago and have had no problem. good luck.
