413 Motor /Wedge

Every V8 big and small block engine Chrysler made between 1958 and whenever the last small block Magnum was build was a wedge. Every single 413 ever made had wedge heads, just like every 350, 361, 383, 440, 273, 318, 340, 360. Wedge simply refers to the shape of the combustion chamber. It's nothing special.

Now, Max Wedge on the other hand is completely different.