According to the info both Tim and myself provided, it looks to be a 235. Tim states it wasn't an option in 3600 and 3800 models, than provides evidence that states a 235 was standard equipment.
I don't know what the hell to think. I thought the old 235s were only used in 1 1/2 - 2 ton trucks, not 3/4 and 1 ton trucks.
Your 235 is going to be a low pressure 235 if the linked information is to be trusted.
That means low pressure oiling. It means solid lifters. Again, tick, tick, tick... This is not a later, full pressure 235 engine. You will have noise in the valve train. How much depends on how things are setup.
Jeff
