View Full Version : Oldsmobile 455 valve cover question

12-31-2012, 06:45 PM
My brother has an 81 grand prix that has an olds 455 in it, he is redoing it and has a clearance problem with the valve cover and heater box. He was told that olds made a cover with a factory indentation in it from 68-72. Any body know of these and or have a set? Thanks a bunch.