[4dblnkldude]

My friend and I recently built and installed a chevy 406 in his 71 nova, and about 10 minutes into break in there was an oil leak. It is on the driver head near the booster, coming right out of the corner. It is right by the last oil return hole in the head. We let it cool and I held a rag back there and finished the break in, and the oil does not leak at idle. This is the first engine he or I have built. The oil pressure is 65 at 2200 and 43 at idle, the engine has dart heads and was decked. How could this oil be leaking between them with two head bolts right there? Any help is appriciated!