That 2194819 was also used on some GMC 228 engines. The first 3 digits of the engine serial number will tell you 228, 248 or 270.

Look here:
Attachments
6CylSerial.jpg (38.84 KB, 105 downloads)


'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.