400/426 Stroker. Ever heard of one?

slimjim said
Same stroke. Reason for the 383 crank is to get a forged unit. When the rod journals are offset ground it increases the stroke from 3.38 to 3.545. Rod journals are now 2.2”

Almost the same stroke difference as a 340 to 360. 360 will make more torque and hp than a 340 at same rpm might expect the same from your build.