Allis Chalmers 20-35 vs Allis Chalmers U

Verdict: Allis Chalmers 20-35 vs Allis Chalmers U

The Allis Chalmers 20-35 and the Allis Chalmers U are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 20 hp. Allis Chalmers U is the lighter machine (2,086 kg vs 3,011 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 20-35 holds more fuel (94.6 L vs 90.8 L) for longer stints between fills. Allis Chalmers U is the newer design (1929 vs 1922). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.