Wedge seen in OP.

Max wedge about 63 up looked like this, called a crossram.
[Linked Image from st.hotrod.com]

And the earlier 2-4 set ups, usually seen on 413's instead of 426's. Called a log ram, or long tub cross ram. Just looking at one for the first time would make ya dizzy.
[Linked Image from c2.staticflickr.com]