Gorillas are pretty strong animals and you sure wouldn't want to get into any fight with the Gorilla since you're likely to lose the battle and end up dying as a result or in the very least be hurt really bad.
I once heard on the animal channel that Gorillas have the strength to bench press 4,600 pounds.
I believe that they said it was the male silverback Gorilla that they said could bench press 4,600 pounds but I'm sure other gorillas could do the same or nearly the same.