Diesel D30 wrote:.
These engines were state of the art at the time they were built, they have pressurized oiling and an oil filter, most engines were splash oil in pickups. .
Well, I guess it depends on your point of view. Compared to Chevy, ya but the Chevy was OHV Chevy had pressure mains, dipper rods, I think Dodge used pressure lube. All IHC designed engine of that era were OHV and either wet or dry liner and had replaceable bearing on full pressure lube. The early HD and later to become the GRD were purchased "out of house" because they had no small engine for a pick-up and didn't want to go through the trouble of designing on until they saw how well a "Light line" would sell, don't forget this was the middle of the depression!
In its earliest form the Fbx engine was used in tractors and the Fax was used in the early 30's Both were OHV and at least the FAx was wet liner, I think the earliest FBx's were still dry liner, but have very little info in the FB series. Both of these were around when they 1st started using the HD. Both these engine were used in some form until the demise of the gasoline engines in truck, the 308 was around until the late 60's and the 450 and 501 were around until 70 or so when smog regs would have required a complete re design, and gas trucks were not in demand, diesel was king.
The 5.9 bock in Dodges had a tendancy to crack just above the oil pan into the coolant jacket, but I guess they fixed that as they sure sell a lot of them.