I just returned from a salvage yard where the guy said he had a set of y-block heads.  Casting number C2TA-6090-B.

When I got to see them the intake ports went up-down not stacked sideways.  I think you know what I mean.  I told him these are not y-block heads.  He said they are late 312 heads where they changed the orientation of the ports.  Never heard that one before.

OK, the C2TA is correct which means 1962 truck.  Ford only had 2 engines in 1962, the last of the y-blocks and the relatively new FE engine.   There was no 312s after '57 that I am aware.

I said this must be a FE engine.  He said it couldn't be because the FE had the rocker arm cover mounting rails partly on the head and the remainder on the intake manifold.  These heads the rocker arm cover rails were 100% on the head.

These heads did have the y-block style milled flats to mount the rocker arm shaft posts (4).

OK guys, what are these heads for?  (no, I didn't buy them)