bought this 65 C10 and I'm having a heck of a time Identifying the motor. I was told its a 250, but I thought the 250 didn't come out until 66.

I pulled some info off the engine and I'm trying to figure out the year and the cubic inches. Basically anything useful so I can keep it alive.

Off the plate near the Distributor.
F0330BN

Near the fallwall
C0N2 0296 or maybe its C0N2 C296

Off the Carb
7004522

Intake Manifold
8859381

I also found this plate on the Drivers side under the Alternator.



From the Engine I've figured its Built in June 3 of something 3. I'm guessing 1973 unless somebody dropped an older motor in it that it had. I have a screw on oil filter so I'm guessing its newer not older.