Five different manuals and not one of them mentions any torque figures anywhere,
If you are not confident in just pinching them up I would guess that 12 foot pounds for clean dry threads will be safe but as the studs /bolts go into an iron block you can possibly go to 16 without fear of doing damage.
Just remember that if you lubricate the threads you should reduce the torque figures; some reference material will say by as much as 30%.