Make sure you have the correct torque on it should be 116 ft-lbs on a 22R. IDK about about an automatic, maybe put it in park and hope that the park pawl holds everything still? IDK crap about autos so, not sure if this is even possible...IIRC the reason why these bolts are so damn tight when ya take 'em off is because as the crank rotates, it actually tightenes the bolt, again don't quote me on that, and either way definintaly DON'T rely on that to get the proper torque on the bolt. Maybe the torque converter would provide enough resistance to be able to tighten it.