Ron, I had never heard of the 378 CI V-6 in trucks up here in the States until I bought the service and parts books for my 504 V-8 from Cummins. Was it due to tariff regulations or what, the reason many of the Aussie new and repowers were small engines like this and the 53 series Detroits???
good question import tariffs may have had something to do with it??
when i started in the early 60,s a R190 was considered a BIG truck
and king of the road on interstate then thru the efforts n foresight of laurie oneal [peterbilt]
and ed cameron [kw] we got the paccar products and western trans started importing b model macks
and these trucks changed trucking here forever unfortunately back in 64 a new 351 pete with a nh250 was the same cost as 2
average homes in sydney!!!!! about ! 1/2 million bucks today something the small operator could not afford
so trucks like 180 ihc 760 dodge f8000 ford and the pommie d series ford with v8-185 sold well
when i started with cummins we had a repower section with 2 mechanics and 1 one welder / fabricator and detriot had the same
and with these size trucks which america used for 6-8 ton local deliveries only the smaller cummins n gm engines would fit
i guess the truck that typified that era in transport would be the ab 184 ihc c-160 cummins 5 speed fuller 2 speed eaton
bench seat manual steering no heater no a/c single speed wipers no washers hyd brakes no engine brake
most went on interstate work pullin 36-38 ft bogie trailer pullin 16-18 ton of freight
madness by u.s standards but they did the job and put a lot of operators into kws in the end