Allis-Chalmers 4W-305 June 1, 2011 by farmlifetoday bigtractorpowerWed, June 1, 2011 4:51amURL:Embed:Allis-Chalmers 4W-305 running a Great Plains 3000TT Turbo Till and Unverferth 1225 Rolling Harrow soil conditioner.