Many applications in the Alliant Power Application Guide list engine serial numbers. The photos below show engine serial number locations for 7.3 L Power Stroke, 6.0 L Power Stroke and I-6 engines. APTB 02/06 SUBJECT: Engine Serial Number Locations February 11, 2006 7.3 L DIT – LEFT REAR OIL COOLER BASE 6.0 L DIT – LEFT REAR CORNER CRANKCASE. Where to look if you're needing your engine serial number on an International 660 diesel tractor.
Ok, it's dark out and I'm testing my sediment bowl for leaks....so far so good....when I notice something really, really odd. There is some RED paint on the engine block. Did these yellow tractors get primed in red? I looked at the engine serial number and the chassis serial number and have these to share:251805 chassis

The casting date on my block is 8 1 A 1...problem is I see that the A was also used in 1955. The bulk of the other casting dates seem to fit with the letter A and I see no red paint.
This leads me to believe that either:
1) PO either painted the engine RED, then repainted it poorly yellow


3) I have a 1955 engine on a 1977 Cub?
International Dt466 Engine Serial Number Location

International Engine Serial Number Location Lookup

What do you all think? Is there a way to tell the age of the engine by serial number since casting letters for the engine were used 2x? I know I have a Zenith carb, but given it's 30 years old, who really knows what happened to 'Daisy' in 30 years. It' s not inconceivable the engine died and a cleaver person found a 1955 engine and added a distributor, Zenith carb (right manifold or not) and painted it yellow. I'm gonna head back out and see if I can find what letter and number combos are stamped to the engine.....and will share it when I get what I can....