International 9000
First generation (Transtar; 1971-1985)
At its launch, the Transtar 4200/4300 was offered with a range of diesel engines, with the 4200 offered with V8 engines and inline-engines for the longer-hood 4300. A Detroit Diesel 260 hp 8V71 V8 was standard on the 4270, with a 230 hp Cummins NH inline-6 standard on the 4370; the latter model was offered with a 434 hp Detroit Diesel 12V71 V12. The engines were paired with manual transmissions, ranging from 5 to 16 speeds (along with optional 4-speed auxiliary transmission). At the end of the 1970s, the 4300 was fitted with the largest diesel engines ever fitted in a road-going vehicle, including the 450 hp Cummins KT inline-6 (1150 cubic inches) and the Caterpillar 3408 V8 (1099 cubic inches).
International 9000-6