The Hemi block has eight steam holes near the lower head bolt holes. The wedge block does not have these steam holes. The block pictured above is correct for a wedge block and does not have the Hemi steam holes.
The wedge industrial blocks had these steam holes.
The later stock 440 blocks had the steam holes, especially the 440-3 motor home and truck blocks
Every wedge block that I saw with steam holes had only four per side, not eight like the Hemi. In 1985 or 1986, Chrysler had a blow out sale on B and RB parts. I ordered and bought a RB block from the local Dodge dealer. It has a 1978 casting date and it has four steam holes per side. It came with either a 4.19 or 4.25 bore, I can't remember. I used that block in my race car in the late 1980's to mid 1990's. I still have that block in storage.
I also bought a B block. It has a 1977 casting date and has four steam holes per side. It has a 4.12 bore. I still have that block in storage and it is new.
