New for 1970 was the heaviest Series 90 with 22,000 lbs rear axle as standard equipment, and 23,000 lbs as an option. GCW could reached 76,800 lbs. A steel-butterfly hood was standard on Series 70 and 80 models.
Standard on Series 90 models was a new fiberglass reinforced plastic hood and fender assembly, that tilts forward for excellent engine access. Moreover, the trucks received new designed grille, and the headlights were moved to its lower side. These models were offered in standart by 6-71N/NE diesel engine rated at 218 / 260 hp.
Series 90 (BBC 115″)
In 1970, the company presented its new heavy-duty Series 90. The range included short conventional with BBC=92″, and long conventional models with bumper-to-back-of-cab dimension was 115″.
The long hood design offered the number of advantages. There was ample room for big Detroit Diesel 8V-71 rated at 318 hp; or Cummins NTC-350 and V903. The entire hood and both front fenders tilt forward as a unit to expose the engine and radiator.
Long conventional models were available only with tandem-rear-axle with a GVW of 50,000 lbs, and GCW – up to 76,800 lbs. Wheelbases were from 146 to 235″.