V A 1985 TRUCK MANUFACTURING SOURCE T V VTRANSMISSION STAMPING INFORMATION Source stamping information for the 1985 Truck Transmission consists of five 5 characters two 2 alpha and three 3 numeric as shown below 1 Position 1 MANUFACTURING SOURCE CODE I The following alpha codes will be stamped in the first 1st position identifying the Manufacturing Sourcezs V A 1 CODE MANUFACTURING SOURCE TYPE A B Parma CBC A J GM of Canada CBC K Muncie Four 4 Speed 70mm Light Duty N Muncie Four 4 Speed 117mm Truck R Muncie Four 4 Speed 76mm Light Duty S Muncie Three 3 Speed 76mm Light Duty it Y Toledo CBC V A POSITION 2 A M0 EL YEAR V 1 The letter F will be stamped in the second 2nd position for model year 1985 POSITION sl I CALENDAR MONTH PRODUCED J The following alpha codes will be stamped in the third 3rd position identifying the calendar month produced CODE MONTN A January 1 B February 1 C March D April T E May H June P K July M August p P September R Oc ober S A November T December 1991OGENERALMOTORSSERWCEPARTSOPERAUONS 4TTRUCK 52M 1 91 4 1 V 4 000