Does A Big CI Stroked SB get to a point where It is hard to keep cool?

I was in the shop this am and took a couple photos, nothing fancy to cool mine. Since the grille opening is pretty small, I did add a couple openings in the fiberglass bumper and a small scoop to pick up air from under the bumper. Was it necessary? I don't know. BTW the crank pulley is only 5".
IMG_6937.jpg

IMG_6938.jpg