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Antique Allis Chalmers Tractor: AC 20-35

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This picture is a 1931 model. Originally produced in 1922, it went through a redesign in 1927 with changed fenders, platorm and steering. The price was also lowered after the redesign.

AC 20-35 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

Nicole Zapf wrote on Wednesday, September 01, 2010 (PDT):
  • Does anyone know of where I could get a Radiator complete or top and bottom tanks for a 1927 20-35 Allis Chalmers
    Brad Carey wrote on Friday, June 11, 2010 (PDT):
  • Gary, do you happen to have any steel lugz for the 20-35
    Gary Roidt wrote on Tuesday, December 29, 2009 (PST):
  • I have some 20-35 parts for sale Gary Roidt 920 253 8192
    Johan Jacobs, Pretoria South Africa wrote on Saturday, December 26, 2009 (PST):
  • The attached picture dates from 1923/25 taken on my grandfarthers farm near the town Jamestown in South Africa - I think this is a Ellis Charmers 1922 This was one of the first tractors used by farmers in South Africa. Please confirm model and year, Regards, Johan Jacobs 26 Dec 2009
    Duaine D Dockter wrote on Tuesday, June 02, 2009 (PDT):
  • I have a 1927 20 35 for sale runing order P H 701 465 3692
    Pierre Aymard wrote on Thursday, May 14, 2009 (PDT):
  • I search a aradiator for antique tractor Allis-chalmers AC 20-35. Thank you for your response.
    Ken Sundblad wrote on Friday, November 23, 2007 (PST):
  • I have a 20-35 and am wondering what the value is.
    Jon McFarland wrote on Monday, August 27, 2007 (PDT):
  • I am looking for a few parts and the paint code for a 20-35.
    chris sebens wrote on Friday, August 17, 2007 (PDT):
  • Mike if you find the code, I also have a customer looking for the ppg code.
    Mike Guichon wrote on Sunday, June 24, 2007 (PDT):
  • I have a 1928 Model E or, 20-35. The tractor is in real good shpe and we are going to paint it. I need to know the correct Allis green for it and a source for decals. If anyone can give authentic information I would be grateful. Mike.
    Brad Carey wrote on Wednesday, October 12, 2005 (PDT):
  • I am looking for a 20-35. I located one in western Iowa, however it dosen't seem to be for sale. I know these tractors are one of a kind but if I find one it will be restored back to original.
    Brad Carey wrote on Thursday, October 06, 2005 (PDT):
  • I am looking for a 25-35. I located one in western Iowa, however, it does'nt seem to be for sale. I know these tractors are one of a kind but if I find one it will be restored back to original and put beside my 36 wc.
    Grandon E Tolstedt wrote on Wednesday, July 13, 2005 (PDT):
  • I drove this tractor in the mid 1930s. As I recall it was purchased in 1929 and was a 20-35. I plowed with a four bottom plow and in thr spring when it was cold I would put the right front wheel in the plow furrow and then walk to the end of the field to keep warm. Then I would get on the tractor,turn it around and get off and walk again. At least 10 miles in the morning and again in the afternoon.This was training for my later time in the United States Army Infantry. My family owned this tractor until 1940. farming in north central SD.
    Roxanne Graves wrote on Saturday, May 28, 2005 (PDT):
  • Does anyone know if an antique (?) 20-35 is a collectible? It even has the driver with it.
    Martha Davis wrote on Wednesday, April 20, 2005 (PDT):
  • Were Allis Chalmer tractors orange in 1925? Thanks
    Vicki Brown wrote on Wednesday, April 06, 2005 (PDT):
  • This year at the oklahoma gas and steam engine show the AC 20-35 is the featured tractor. This is the first really good picture we have been able to find of this tractor.I would be intrested in other views of the tractor or black and white line drawings would be nice. The shows web sight is www.oklahomathreshers.org Any help you could supply would be greatly appreaciated.
    Burdell Johnson wrote on Tuesday, February 15, 2005 (PST):
  • I am restoring a 20-35 AC my Dad owned. I could use a piston and exhaust manifold plus other parts
    K. T. Novak wrote on Friday, September 26, 2003 (PDT):
  • The allis 20-35 is truely a magnificent machine. It is by far my favorite model ot the Allis-Chalmers Line. Hopefully one day i will be lucky enough to add one to my collection. Due to the fact that i am younger and some models are costly i think i'm going to have to stick to my B, WC and CA
    Brent B. wrote on Thursday, October 24, 2002 (PDT):
  • My grandfather had an allis chalmers (probably the size of a WD-40). It had steel wheels in the rear and rubber in the front. It had a crank startand he used it at his summer cottage on an island to run a saw mill and to pull trees out of the woods. I was wandering if someone could guess the aprox. year and model. Thanks Brent B. St. Anne,Illinois
    Jon M. wrote on Monday, March 11, 2002 (PST):
  • I am in need of 20-35 parts to finish my 28Ac.
    Robert Willis wrote on Friday, March 08, 2002 (PST):
  • What is the correct magneto for an Alis Chalmers 20-35?
    Rick Terhaar wrote on Saturday, October 13, 2001 (PDT):
  • new e-mail address
    Rick Terhaar wrote on Sunday, March 18, 2001 (PST):
  • I have a parts for a 20-35. The motor was blown & block cracked.Its just a pile parts now that I gave up on.If you need parts for one let me know.
    james wrote on Saturday, December 02, 2000 (PST):
  • I have a 1728 allis chalmers about 1928 I beleive I am about ready to begin fixing it up it is complete and completly seised if anyone out there has an operators manual give me an e-mail thanks in advance
    LOUIS SAETZ wrote on Saturday, November 25, 2000 (PST):
  • I USED ONE FOR A COUPLE OF YEARS. FOUND IT TO BE A GAS EATER. POORLY DESIGNED AS IT WAS FRONT HEAVY AND TOOK MOST OF IT'S POWER TO PUSH THROUGH SOFT GROUND AND UP SANDY HILLS. REAR WHEEL DRUM GEARS NEEDED CONSTANT CLEANING AS SEALS WERE POORLY DESIGNED WITH LOOSELY FITTED ROLLER BEARINGS. TOOK SEVERAL TURNS OF THE STEERING WHEEL TO TURN THE TRACTOR AROUND. IT SURE DONE A GOOD JOB ON MY MEMORY OF IT.
    Dan Dooley wrote on Wednesday, May 31, 2000 (PDT):
  • I grew up on Allis Chalmers tractors. The WC and WD. Now I have a collection of over 180 tractors of every sort. Although I like them all, my favorate and the one responsible for my collection beginning is my 1930 20-35. I have run it in many parades and it has never quit or been hard to start. It is all orginal and on steel. I usally make a U-turn in the middle of the street during parades and have never seemed to lack for room to turn. I live in the Black Hills of S.D. near Custer. In the summer lots of travlers stop to look at my collection that I have lined up around my place. No charge and nothing to sell. If anyone is ever in this area stop in.
    adam wrote on Friday, May 19, 2000 (PDT):
  • i have a allis chambler b ill take 1100 cash for in good shape just beed over hauled it may have 4 hours on over hauli have a deck dor it and i just painted it
    Glenn Lennox wrote on Thursday, April 20, 2000 (PDT):
  • My father and I have 2 20-35's, in varying stages of restoration. A comment on the "easy" steering... We had just gotten the latest acquisition running a few years ago, and wanted to try it out at a plowing demo. Didn't bother to check out the steering, which seemed a bit heavy but worked. Made one pass with a 3 bottom plow, cranked it off hard to turn at the end, where the steering promptly locked. Made a complete 360 degree loop before giving up reefing on the wheel, and threw the clutch. unhooked, and finally freed the steering, then just parked it for the day. Not a very great first impression! Greasing the linkage and the gearbox have helped, but it's still a brute to steer! FUN
    Bill wrote on Monday, December 20, 1999 (PST):
  • I owned a WD45. best power for the money
    Gary Hower wrote on Saturday, December 18, 1999 (PST):
  • The 20/35 takes two men and a mule to turn. Rides rough. There is nothing more fun to operate!


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