torquing intake bolts

As others have said, with alum just tighten to 25 ft lbs. Use the same bolt size somewhere else where you can use a tq wrench to get a feel for what 25 ft/lbs feels like.

Do not forget to recheck bolts, cold, after the engine cools down. Gaskets normally 'settle' & bolts need to be checked. May take 2 or 3 cycles.