I have a very complete 69 350,minus carb,out of a 69 full size. It has sat for years,it was in a 69 SS Impala I bought years ago as a donor car for a 69 Biscayne I have. I was told it was a very low miles engine and it appears the person that pulled the 427 was intending to use the motor as is. In no way am I saying it shouldn't be rebuilt,as it has sat for years.Eastern Iowa area.I believe the oil pans are different for a Chevelle though.