Bührer PF-21 Super (A) vs International Harvester 674

10 material differences · fewer than 12

Tractor one

1968–1974

No measured PTO figure

Tractor two

1973–1975

No measured PTO figure

Which should you choose?

Read our verdict on the PF-21 Super (A) and the 674 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

10 material differences · 6 fields identical or within 5%, which is not counted as material

Bührer PF-21 Super (A) and International Harvester 674, field by field
Field	PF-21 Super (A)	674	Gap
Engine
Engine power, claimed claimed	66.1 hp	64.1 hp	—
Engine declared	FORD (GB) 2.514 E	INTERNATIONAL-HARVESTER D-239	differs
Displacement declared	4.18 L	3.91 L	+7% PF-21 Super (A)
Maximum torque declared	183 lb·ft · 248 N·m	153 lb·ft · 207 N·m	+20% PF-21 Super (A)
Transmission
Top speed declared	15.5 mph · 25 km/h	15.5–18.6 mph · 25–30 km/h	differs
Clutch declared	Pedal-operated dry Buhrer double disc clutch between gearbox and group transmission	Pedal-operated dry LAYCOCK single-plate clutch	differs
Hydraulics & hitch
Pump flow declared	5.2 gpm · 19.5 L/min	11.1–12.6 gpm · 42.1–47.7 L/min	differs
Three-point lift at ends declared	5,181 lb · 2,350 kg	4,211 lb · 1,910 kg	+23% PF-21 Super (A)
Rear PTO speeds declared	540/770 rpm	540/1000 rpm	differs
Weight & dimensions
Unladen weight declared	5,357 lb · 2,430 kg	5,106 lb · 2,316 kg	—
Wheelbase declared	84.3 in · 2,140 mm	84.5 in · 2,146 mm	—
Length declared	129.5 in · 3,290 mm	140.6 in · 3,570 mm	+9% 674
Width declared	69.3 in · 1,760 mm	68.9 in · 1,750 mm	—
Height declared	65.7 in · 1,670 mm	86.2 in · 2,190 mm	+31% 674
Ground clearance declared	15.0 in · 380 mm	14.4 in · 365 mm	—
Turning radius, braked declared	10.9 ft · 3.33 m	10.9 ft · 3.31 m	—
Fuel tank declared	—	81.2 qt · 76.8 L	—

Source

Source