TractorDex
TractorDexIndex
Multi-model comparison

Side-by-side tractor comparison

Compare technical specifications, horsepower ratings, hydraulic capacities, and dimensions across all tractor models.

Head-to-Head Arena Spotlight

Direct technical match-up between flagship models

Caterpillar Forty
54 HP
Caterpillar

Forty

8 L Engine
Full Technical Profile →
VS
+3.7%
Allis Chalmers A
56 HP
Allis Chalmers

A

8.4 L Engine+2.0 HP Lead
Full Technical Profile →
Quick Takeaways:⚡ Rated Power: Allis Chalmers A (+2.0 HP / +3.7%)🛢️ Displacement: Allis Chalmers A (+0.4 L)
Model overview
2 selected
Caterpillar Forty
📸 Photo
54 HP
Caterpillar

Forty

Catalog archive
Open model sources
Allis Chalmers A
📸 Photo
56 HP
Allis Chalmers

A

Catalog archive
Open model sources
Engine and power
Rated horsepower
54 HP
56 HP+2.0 HP
PTO horsepower
—
—
Engine displacement
8 L
8.4 L+0.4 L
Cylinders
4 cylinders
4 cylinders
Fuel type
Gasoline
Gasoline
Transmission and drive
Drive system
Tracks (Crawler)
2WD
Transmission type
Gear (4F/1R)
Non-synchronized gear (4F/1R)
Forward / reverse gears
4 fwd / 1 rev
4 fwd / 1 rev
Weight and capacities
Operating weight
6,180 kg+2,926 kg
3,254 kg
Hydraulic total flow
—
—
ASABE Field Implement Capacity Matchup
Max Subsoiler (12" depth)
1 Shanks0
1 Shanks0
Max Disk Harrow (8 mph)
6 ft (2 m)0
6 ft (2 m)0
Max Air Seeder (5.5 mph)
15 ft (5 m)0
15 ft (5 m)0
Target Ballast & Balance
Heavy-draft standard (30/70 for 2WD, 40/60 for MFWD, 55/45 for 4WD)
5,670 lbs
50% Front / 50% Rear
8,120 lbs
30% Front / 70% Rear
Est. Fuel Burn (75% Load)
1.9 gal/h (7.2 L/h)
2 gal/h (7.6 L/h)
Provenance and serial decoders
Production years
1934–1936
1936–1942
Assembly factory
—
West Allis, Wisconsin, USA
Serial decoder support