I believe Engle for a long time made all the cams for Hughes. So, yes all the cams they had were Engle that said Hughes on the box
Now Howard’s makes all of them.
The cam is the OP looks like it would be 239/245@50, probably installed at 103-104.
It’s a solid flat tappet cam. No idea what the lash should be.
First aftermarket cam I ever had was an Engle I bought in 1975 for a 340