i have a cam that i took from a 57 312 engine   i found it had fomoco on the end and the number 64 it is wiped out so no use in trying to measure it just curious what it might be carl

I'm assuming the Ford script and the number '64' are on the tailend of the camshaft?  I'd suggest looking for an intake and exhaust lobe that's not wiped out and at least measuring for lobe lift.  Just measure on the edge of the cam lobe in question at both the base circle and the maximum lift points and see if you come up with something close to 0.272" for the intake and 0.285" for the exhaust.  If you come up with anything close to these, then the specs match up to the '57 model 2V and 4V camshafts.

If you need the opening and closing specs, I've got these.

Lorena, Texas (South of Waco)

Ted  I measured the lobe next to the dist. gear the only one that wasnt wiped to bad and came up to .o275   thanks for the info.  carl