That was over 36 years ago in 1985.
Today he is 81, and has starred in 94 movies in total, 64 since Rocky IV was released.
In Rocky IV, I think Burt Young looks:
Rocky IV scores 6.7 out of 10 on The Movie Database.
Burt Young's first acting role was as 'Willie Quarequlo' in The Gang That Couldn't Shoot Straight, released in 1971 when he was 31.