I can't recall the exact torque spec for the bolt because I'm snug and warm in bed surrounded by five cats. If I tried to stand and get my 114/115 chassis big pale blue book there would be a mutiny. Four of the cats have the normal eighteen toes apiece and Jack has 24 toes (he's polydactyl) that's a total of about seventy eight angry claws if my mental arithmetic is sound.
Getting back to useful information here... I DO remember trying to undo the front subframe bolts takes a whole mother****er and a half of torque without an impact wrench. Either way they usually shear in a bad place due to corrosion despite your liberal use of PB blaster and propane heat for three full days before you even touch the fist bolt. In a perverse way you're lucky that yours wasn't welded in there with a big lump of oxidized salty read threads.

Long story short, I'll look it up for you tomorrow morning if someone else hasn't already.