My '74 280 M110 had oil seeping through the seam between the cam tower and the cylinder head on the exhaust side.

I re-torqued the cylinder head bolts and carefully re-torqued all the smaller fasteners securing the cam tower to the head. That stopped the leak. I suspect the extreme heat from the reactor-style exhaust might have distorted the cam/head join enough over time to allow oil to seep out.

Best of luck



Tim Kraakevik
kraakevik@voyager.net