15 21 2400 4 283 8 cylinder with 4BC i E 15 21 2400 283 8 cylinder with Dual 4BC EA 15 21 2400 283 8 cylinder with Dual 4BC and Hi Lift Cam EB 15 21 2400 283 8 cylinder with Overdrive and 4BC EC 15 21 2400 283 8 cylinder with Powerglide F 15 21 2400 283 8 cylinder with Powerglide and 4BC FC 15 21 2400 283 8 cylinder with Powerglide and Dual 4BC FD 15 21 2400 283 8 cylinder with Powerglide and Air Cond FA U 15 21 2400 283 8 cylinder with Powerglide Air Cond and 4BC FE 15 21 2400 283 8 cylinder with Powerglide and Fuel Injection Fl 15 21 2400 283 8 cylinder with Turboglide G 15 21 2400 283 8 cylinder with Turboglide and 4BC r GC 15 21 2400 283 8 cylinder with Turboglide cmd Dual 4BC 1 GD 15 21 2400 283 8 cylinder with Turboglide and Fuel Injection GF 15 21 2400 283 8 cylinder with Fuel Injection El 15 21 2400 283 8 cylinder with Fuel Injection and Hi Litt Cam l EK CORVETTE 283 8 cylinder with 3 Speed Transmission and 4BC EF CORVETTE 283 8 cylinder with Dual 4BC l EH CORVETTE 283 8 cylinder with Dual 4BC and Hi Lift Cam EG CORVETTE 283 8 cylinder with Powerglide and Dual 4BC FG CORVETTE 283 8 cylinder with Powerglide FH CORVETTE 283 8 cylinder with 3 Speed Transmission and Fuel Injection EM CORVETTE 283 8 cylinder with 3 Speed Transmission Fuel Injection and Hi Litt Cam EL CORVETTE 283 8 cylinder with Powerglide and Fuel Injection FK 31 32 36 3800 Thiftmaster 235 H 31 32 36 3800 4000 Thriftmaster 235 with Hydramatic Transmission HD 31 32 36 3800 4000 l Thrittmaster 235 with H D Clutch HE 34 35 3700 Thrittmaster 235 Up draft I 34 35 3700 Thrittmaster 235 Updra t and Hydramatic 1 IA 6000 lobmaster 261 K 31 32 36 3800 4000 Trademaster 265 l L 4000 Trademaster 265 with Hydramatic LA 31 32 36 3800 4000 Trademaster 265 with H D Clutch LB 34 35 3700 8 cylinder Dubl Duti M Note The continuous engine serial number has been eliminated The engine plants now stamp a source production date and type on serial pad Example T101A T 1 O1 A Tonawanda Month Day Standard 6 cyl 235 Plant Ianuary First Models 15 21 2400 12