What's my motor's power output?

[kartoffelpanzer]

Hello-

I have a 79 300SD and am trying to determine if I have the 111hp or 121hp motor. My motor was replaced with a factory rebuild sometime in the mid-80s. The tag on the rebuild notes it as a 617.950 motor, I forget the other numbers and am out of town, or else I would check.

Is there a way to visually ID the 111hp motor from the 121hp motor from the exterior, or is everything internal?

Thanks-
Rob
79 300SD W116