JA 396-4 325-L35 Manual A.I.R.
JC 396-4 350-L34 Manual A.I.R.
JD 396-4 375-L78 Manual A.I.R.
JE 396-4 350-L34 TH-400 A.I.R.
JK 396-4 325-L35 TH-400 C.C.S.
JV 396-4 325-L35 Manual A.I.R./Heavy Duty Clutch
KB 396-4 350-L34 Manual A.I.R./Heavy Duty Clutch
KD 396-4 375-L78 Manual A.I.R./Heavy Duty Clutch
KF 396-4 375-L78 TH-400 A.I.R.
KG 396-4 375-L78
(w/L89) Manual A.I.R./Aluminum Heads
KH 396-4 375-L78 (w/L89) TH-400 A.I.R./Aluminum Heads
KI 396-4 375-L78 (w/L89) Manual A.I.R./Heavy Duty Clutch/Aluminum Heads
On the engine pad the first set of numbers on the left are from the engine factory and give you the date and designation of the engine as well as which plant the engine was built. The second set of numbers was stamped at the assembly plant and contains the year of assembly plant designator and partial VIN. If you only see the first numbers on the left, check the rough area near the oil filter. Some plants stamped the con Vin or partial VIN in this location. see attachment.
Your transmission will also have a con VIN stamped on the left side of the trans above the oilpan rail near the shifter mechanism if original.