Cummins Big Cam 4 motors, prone to overheat?

If I remember correctly, the IV are the ones with the low flow cooling system. These engines take a special radiator and different sealing rings in the water manifold. This engine is a little before my time, but I believe if you keep these in check...it should cool ok. Just like any other engine, make sure the temp gauge and t-stat is working properly, cooling system filled with coolant, and the cooling package cleared of dirt and debris.

 

the rads have a silicone baffle in them in the bottom tank that is the most common issue. but aslong as that is ok and your thermostats are good you should have no issues

 

If everything is in good shape like they said in the post above, you shouldn't have any problem, we never had problems until we turned fuel to them. The water temp would go up on short hills in Louisiana then.

 

As a mechanic for International for 3yrs, the most common overheating problem was the silicon gasket in the radiator. The problem is it comes apart and ends up at the thermostat. In the BC4 motors, there was a wire screen in the thermo housing that clogs up with this silicone. Hence, not enough water flow. Other than that, don't remember much bad about the BC4. Keep an eye on that and you should be OK

 

Any pics of this trucks?

KH