Have a FoMoCo cam I bought long ago, was told was a 390GT/428. It has the FoMoCo logo cast in it, and "40" cast in it near one end between two lobes. A red stripe, or a red with lighter red right next to it, on one end. Looking around saw references to light blue for the 390/428... no red.
Anyone know of a good reference to help ID the part?