I have an alloy crank pulley so I have to either lock the ring gear thru the starter mount, if in the car, or the back side of the block, if on the engine stand. Never had any problems with either method. I think your best option would be to borrow or rent an impact driver. I've used a breaker bar and a extension pipe and still could not loosen the bolt. One zap with the impact gun and the bolt came right off. Dave W