Don't want to consider an air impact? You can find numerous air compressors that will operate on 110V house current that will provide 135 - 150PSI of air pressure. This is more than adequate to run a good quality air impact wrench, such as an Ingersoll Rand, etc. A good upright (vertical) air compressor on wheels from Sears or Home Depot will run the impact and several other air tools useful in auto repairs.
