1980 84 TRUCK K MANuI AcTumNG souncz TZZ TRANSMISSION STAMPING INFORMATION ma Source stamping information for the 1980 81 Truck Transmission consists of five 5 characters two 2 alpha and three 3 numeric as shown below V POSITION 1 MANUFACTURING SOURCE OODE The following alpha codes will be stamped in the first lst position identifying the Manufacturing Source F CODE MANUFACTURING SOURCE 84 TYPE 1 B Parma CBC J GM of Canada CBC K Muncie Four 4 Speed 70 mm Light Duty N Muncie Four 4 Speed 117 mm Truck R Muncie Four 4 Speed 76 mm Light Duty S Muncie Three 3 Speed 76 mm Light Duty V Toledo CBC POSITION 2 MODEL YEAR The number 0 zero will be stamped in the second 2nd position for model year 1980 POSITION 3 CALENDAR MONTH PRODUCED A The following alpha codes will be stamped in the third 3rd position identifying the calendar month pro duced l coma Morrrn A January I B February C March D April E May H June I K July M August V P September R October S November T December GENEHAL MOTORS SERVICE PARTS OPEFX TIONS LT Tauck s2A 1 V V 4 E I