12 16 1800 348 8 cylinder with 3 Speed Transmission and 3 2BC FA 12 16 1800 348 8 cylinder with Hi Litt Cam 4 FD 12 16 1800 348 8 cylinder with 3 Speed Transmission 3 2BC and Hi Lift Cam FB 12 16 1800 4 348 8 cylinder with Powerglide G 12 16 1800 48 8 cylinder with Turboglide H 12 16 1800 348 8 cylinder with Turboglide and 3 2BC r HA CORVETTE 283 8 cylinder with 3 Speed Transmission CQ CORVETTE r 283 8 cylinder with 3 Speed Transmission and Fuel Injection r CR CORVETTE 283 8 cylinder with 3 Speed Transmission Fuel Injection and Hi Litt Cam CS CORVETTE 283 8 cylinder with 3 Speed Transmission and Dual 4BC CT CORVETTE 283 8 cylinder with 3 Speed Transmission Dual 4BC and Hi Litt Cam CU CORVETTE 283 8 cylinder with Powerglide l DG CORVETTE 283 8 cylinder with Powerglide and Fuel Injection DH CORVETTE 283 8 cylinder with Powerglide and Dual 4BC DI 31 32 36 3800 Thriftmaster 235 with 3 Speed Transmission I 31 32 36 38 41 4400 Thriftmaster 235 with Hydramatic Transmission IF 34 35 3700 Thrittmaster 235 with 3 Speed Transmission K 34 35 3700 Thrittmaster 235 with Hydramatic Transmission l KA 4000 Thriftmaster 235 with 3 Speed Transmission and H D Clutch IC 6000 Iobmaster 261 r L 31 32 36 38 4000 Trademaster 283 M 31 32 36 38 41 4400 Trademaster 283 with Hydramatic Transmission MA 31 32 36 38 4000 Trademaster 283 with H D Clutch MB 6000 Taskmaster 283 P Note The continuous engine serial number has been eliminated Engines are now stamped with a source production date and type on serial pad EXAMPLE F1210P F 12 IO P Flint Plant Month Day Taskmaster 283 6000 Series December Tenth 14 mavnszn nzcmssn 1 wsa