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Allen..... ...would it surprize you to learn that Ford's flathead tractor engine was also sold for other commercial uses like irrigation pumps; oilwell pumps; railroad refridgeration cars; railroad Pullman airconditioning; remote AC generator plants for radar stations; WW2 Jeep engines; 1940 city delivery van engine? Would it surprize you to learn all N-Engines are interchangeable and many times the engine was dealer exchanged instead of shop mechanic rebuild? And would it further amaize you to learn that there very few engine serial number specific changes that are NOT INTUITIVE OBVIOUS? The biggest change was in 1950, when Ford changed from the 4-nipple frontmount distributor to the 5-nipple sidemount distributor. And added the governor driven cable drive "ProofMeter". And would it further amaize to learn that what you think is a screwed-in plate is actually part of the engine casting for quality control? And not the weakly handstamped engine block serial number on a 1x4 flatboss just under the cylinderhead gasket on the leftside of the engine? And iff'n you doubt all this information, check yer rearaxle trumpets; they have a coded casting date also. And you can also usually find an assembly date stamped in plain numbers on the hydraulic pump flat plate..... ....respectfully, Dell, the non-serial/numberest
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