'54 - '56, 8 cylinder:
’54 C-1-B8, 8 cyl: 84,250,001 Detroit, 86100001 LA (8 digits)
’55 C-3-B8, 8 cyl: 84,265,001 Detroit only
’56 C-3-B8, 8cyl: 84,284,001 Detroit only

'57 is first year of 4 x 4 – now groupings are divided D100 (2 x 4) & W100 (4 x 4):
'57 D100, 6 cyl: 82,413,001 "K" series trucks (8 digits)
'57 D100, 8 cyl: 84,289,001
'57 W100, 6 cyl: 81,910,001 (910 / 901 looks funny, but I double checked it)
'57 W100, 8 cyl: 82,901,001

'58 D100, 6 cyl: L6D10 - L01001 "L" series trucks (11 digits)
'58 D100, 8 cyl: L8D10 - L01001
'58 W100, 6 cyl: L6W10 - L01001
'58 W100, 8 cyl: L8W10 - L01001

The following years all follow the '58 format:
'59 D100, 6 cyl: M6D1 - L01001 "M" series trucks (11 digits)
'60 D100, 6 cyl: O6D1 - L100001 "P" series trucks "Parts Availability No."
'61 D100, 6 cyl: 16D1 - L100001 "R" series trucks "Parts Availability No."
'62 D100, 6 cyl: 26D1 - L100001 "R" series trucks "Parts Availability No."

Back to "Vehicle Serial Number" (10 digits):
'63 D100, 6 cyl: 11-6-1230000 "S" series trucks
'63 D100, 8 cyl: 11-8-1230000
'63 W100, 6 cyl: 21-6-1230000
'63 W100, 8 cyl: 21-8-1230000

The following years all follow '63 format:
'64 D100, 6 cyl: 11-6-1315000
'65 D100, 6 cyl: 11-6-1430000
'66 D100, 6 cyl: 11-6-1548000
'67 D100, 6 cyl: 11-6-1668000 (11-6-7000000 = Warren & Missouri built)