Lamborghini expanded its lineup to 6-cylinder tractors starting in 1977, when the 1056 (105 hp) was introduced. This series was the first developed during the ownership of Same, and this collaboration was evident in many aspects. The air-cooled 5.4-liter engine was the same as in the Same Tiger, only in a slightly more powerful version. The following year, the 1256 with 125 horsepower was added alongside it, featuring a new 6.2-liter engine that was the same as in the Same Buffalo. Later on, the 1056 switched to a water-cooled 5.5-liter engine. In the early 1980s models 1356 and 1556 introduced engines that were 6.8-liter water-cooled Hürlimann units.

The transmission was fully synchronized 12+3, like in the smaller Lamborghinis, and the road speed clearly remained below 30 km/h. The clutch in all models had a diameter of 14 inches, so in that respect, the robustness corresponded to the tractor's power class. The maximum lifting capacity was 5,500 kg. The cab was still quite simple and almost unlined.

The technical data listed in brochures is partially incomplete, and the production years stated here for the models are approximate.

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