The impact is a great idea too. But I got one of those new Dewalt impacts and the medium setting could do it, but the high setting hits at the 500 ft.lbs. I haven’t gotten the feel for it yet, so….
My torque wrench maxes at 150 ft/lbs. so I’ll give it to that and then 1 to 1.5 Unga Unga’s with a brearker bar.