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Antique Allis Chalmers Tractor: AC A

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This tractor was produced from 1936 through 1943. It came with either steel wheels or on rubber, and ran on gasoline. It's primary mission was belt work so the big engine was an important asset, producing 51.2 horsepower on the belt and 39.7 on the drawbar. Approximately 1225 were made.

AC A Tractor


Do you have any comments or questions about this tractor? Ever use one? Know anyone who owned one? If so, please join in on the discussion below. Use the form for entering your comments.

Comments on this Tractor

Gene Carr wrote on Wednesday, October 07, 2009 (PDT):
  • I am looking for an A Model AC Tractor. 605.783.3832
    Bob Sweet wrote on Thursday, July 23, 2009 (PDT):
  • Can anyone tell me where I can get a set of original looking decals for a Model A Power Unit. Serial # E-3116
    Bob Sweet wrote on Thursday, July 23, 2009 (PDT):
  • Does anyone have an electric starter for a Model A they are willing to part with. I have a Model E-60 power unit which I have completely restored and I also have a tired back from using the hand crank. Any help would be greatly appreciated.
    Glenn Kauffman wrote on Thursday, July 23, 2009 (PDT):
  • What size are the front and back tires on the AC A Can you also tell me the style rim.
    Jamie Clark wrote on Thursday, June 25, 2009 (PDT):
  • I have an A Model AC Tractor with an unusual cab. The engine was totally rebuilt with rings, sleeves, timing gears, and ran great. The intake manifold finally let go and needs replaced. Were can I find one I am thinking of selling it if anybody is interested.
    Dick Heitz wrote on Friday, February 13, 2009 (PST):
  • I have a 1937 that was on the classic tractor calender id 1994.
    Roger Howell wrote on Monday, December 15, 2008 (PST):
  • I am looking at a 480V EM generator powered by an Allis Chalmers engine natural gas powered If I could find out who made the flat head six, perhaps I could look into converting to carb. Mod - L - 525 On block - 7 16 7 On other side of block - 4651581 Can you help
    Royce Stewart wrote on Monday, October 02, 2006 (PDT):
  • I have always like the Allis Chalmers tractors and other equipment. I would like to find a 1936-42 Model A to restore , a long range project.
    charley ishmael wrote on Monday, June 27, 2005 (PDT):
  • i am in need of a oil filter element for a a ac the element is 6 3/4 tall and 5 15/16 inch across, any info would be appreciated
    Josh Gill wrote on Monday, February 28, 2005 (PST):
  • I have a CA and it is the best garden tractor I have ever owened
    John Adams wrote on Saturday, February 22, 2003 (PST):
  • I have found ac tractor it is call a thresher man specail it apears to be two sides bigger than the A allis it may have a 5 or5.5in.bore and 6+in stroke and run on karesen would like to know what size it is please email be john_bill_adams at yahoo.com thanks
    Neal Beck wrote on Wednesday, January 15, 2003 (PST):
  • I am looking for an A is restorable condition
    jay bodkin wrote on Wednesday, November 27, 2002 (PST):
  • I AM LOOKING FOR AN A OR U OR 15-30 MODELS COMPLETE OR CLOSE TO IT.. CALL WITH INFO TO CHURCHVILLE VA. 540 337-6106 I HAVE BEEN LOOKING FOR AWHILE AND YOU JUST CANT FIND ANY. THANKS..
    Darrel Foltz wrote on Saturday, November 16, 2002 (PST):
  • Working on AC K 35 Crawler-yr-1931. Need 1 connecting rod with spun babbit bearing-12 volt Autolite starter #ML-4123 or#ML-4177.May need more later. Help! Got a few AC Model M parts if some one needs some.
    sammy noodleman wrote on Thursday, September 19, 2002 (PDT):
  • will try to help anyone out with questions on any AC tractors.i work for a dealership which has been here for 60+ years.i've been ther 25yrs.myself.i love the diamond!!!
    John Gunn wrote on Saturday, August 04, 2001 (PDT):
  • I have what looks like an AC model A and the only serial numbers I can find are on the back of the block W93651K. this doen't match numbers in registery. it has hand brakes, any idea? I would like to know how many were built and if some parts are still available.
    Bev Stewart wrote on Friday, September 17, 1999 (PDT):
  • We are looking for any information you can give us on what we think is a 1948 Allis Chalmers WD tractor. We have found some information on the website on other models but there doesn"t seem to be much on this particular year. Appreciate anything yous can come up with.
    Butch Cherrington wrote on Friday, June 11, 1999 (PDT):
  • I own a model A. I am in need of set of sleeves. I have the 4 3/4" bore gasoline only engine. I also need an original magneto for it. I also have a complete 5" bore kerosine engine in running condition for sale. I believe it is from a model K. Has radiator, hood, fueltank and clutch.
    Karl Hildebrand wrote on Tuesday, April 27, 1999 (PDT):
  • I found a Model A in the paper for sale with a plow. I haven't seen it yet, but was wondering what it looked like, so was happy to see the picture. Do they take 3pt hitch attachments or are they belt driven? What is a good price for one in running condition?


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