10 material differences · fewer than 12

Tractor oneLamborghini R-1056 (DT)1977–1984No measured PTO figureTractor twoVALMET 6600-4 (6600E)1991–2000No measured PTO figure

Which should you choose?

Read our verdict on the R-1056 (DT) and the 6600-4 (6600E) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

10 material differences · 3 fields identical or within 5%, which is not counted as material

Lamborghini R-1056 (DT) and VALMET 6600-4 (6600E), field by field
Field	R-1056 (DT)	6600-4 (6600E)	Gap
Engine
Engine power, claimed claimed	103.5 hp	103.5 hp	—
Engine declared	SAME DA 986-3 or 916-6 W	VALMET 420 DS (420 DSE)	differs
Displacement declared	—	4.40 L	—
Maximum torque declared	251 lb·ft · 340 N·m	299 lb·ft · 405 N·m	+19% 6600-4 (6600E)
Transmission
Top speed declared	15.5 mph · 25 km/h	18.6–31.1 mph · 30–50 km/h	differs
Clutch declared	—	Pedal operated dry Fichtel & Sachs single plate clutch	—
Hydraulics & hitch
Pump flow declared	12.7 gpm · 48.0 L/min	21.2 gpm · 80.3 L/min	+67% 6600-4 (6600E)
Pressure declared	—	2,031–2,248 psi · 140–155 bar	—
Rear PTO speeds declared	540/1000 rpm	540/1000 rpm	—
Weight & dimensions
Unladen weight declared	8,664 lb · 3,930 kg	9,700 lb · 4,400 kg	+12% 6600-4 (6600E)
Maximum permissible mass declared	—	16,535 lb · 7,500 kg	—
Wheelbase declared	107.3 in · 2,725 mm	91.6 in · 2,326 mm	+17% R-1056 (DT)
Length declared	178.0 in · 4,520 mm	177.7 in · 4,514 mm	—
Width declared	88.6–104.3 in · 2,250–2,650 mm	78.1–101.8 in · 1,985–2,585 mm	differs
Height, over the cab declared	114.2 in · 2,900 mm	108.3 in · 2,750 mm	+5% R-1056 (DT)
Ground clearance declared	21.3 in · 540 mm	19.1 in · 485 mm	+11% R-1056 (DT)
Turning radius, braked declared	—	15.3 ft · 4.65 m	—
Fuel tank declared	126.8 qt · 120.0 L	174.4 qt · 165.0 L	+38% 6600-4 (6600E)

Source

Source