Can anyone tell me what the torque spec is for the lower strut mount bolt on a 2007 Volvo S-40?

 

Hi Bear, welcome to the site.

 

Front:
-Shock absorber mounting nut (on top) is 52 ft. lbs. (70 Nm)
-Wheel spindle to strut assembly and tighten to 66 ft. lbs. (90 Nm)
-Bolts holding the strut in the steering knuckle. Use new bolts and nuts. Tighten to 78 ft. lbs. (105 Nm) and then angle-tighten 60°

Rear:
-Upper shock absorber bolt, tighten to 18 ft. lbs. (24 Nm)
-Lower shock absorber bolt, tighten to 78 ft. lbs. (105 Nm)

Source: Chilton Library

 

impact, and feel.