4*2*68 cast date (Monday)

HP2 = high performance (assembled) 2nd shift

PT440P24980783
PT = Trenton, MI engine assembly plant
440 = cu.in.
P = premium fuel
2498 = engine assembly date = Thursday May 30, 1968
0783 = engine unit number

the VIN should be stamped by the oil sending unit upper rear of block

it's a 1968 model year 440HP engine (375hp)