Does this number mean anything?
This number is the engine's serial number (not to be confused with the partial VIN on the passenger side)
F - Series (model year) 1970
W - Windsor Ontario, Canada - Engine assembly plant
340 - 340 CID
P - Premium fuel recommended
3225 - Engine final assembly date from the 10,000 day calendar - May 28, 1970
0203 - 203rd engine completed at this plant on the date above.