An important phase began in 1972, when GINAF introduced the KFS 12 model with a DAF F-218 tilt cab at the Bedrijfsauto RAI, the European Road Transport Show in Amsterdam. Also new in 1974 was the KFS 14 (6x4) with DAF six-cylinder diesel engine (175 hp or 236 hp) and ZF transmission. This chassis was intended for normal road transport or the construction of specialized bodies. When European competitors with heavy 8x4, 8x6 and 8x8 dump trucks entered the market in the 1970s, GINAF developed the KFS 16 with 8x8 drive for a payload of 16 tons. It was equipped with Timken axles and powered by the DAF DU 825 diesel engine with 216 hp and an Allison automatic transmission. To meet the increasing demand for multi-axle chassis, Van Ginkel built a new factory in Veenendaal, a few kilometers south of Ederveen.
Production of conventional trucks on REO chassis was discontinued in 1979. As the stock of parts from the army depot was now running low, and the demand for heavier trucks increased, GINAF had to manufacture stronger components around 1979.
In the same year, the new F 480 (8x8) with a gross payload of 24.5 tons was introduced. Through technical innovations, GINAF succeeded in the following years in achieving ever higher gross weights within the legally permissible axle loads. More powerful engines, such as the DAF DKTD 1160 with 256 hp, made the use of the larger F 241 cab necessary. This cab corresponded to that of the DAF F 2800. The DKTD was also installed in models with the F 218 cab, but higher on the chassis. With its Faun axles and a gross vehicle weight of 36 tons, the F 480 with DKS 1160 engine and 8x8 drive was a true off-road vehicle.