ENGINE SERIES NUMBER AND SUFFIX CHART 1956 Type Model Description Designation 4000 235 6 Cyl Thriftmaster with Hydramatic XGC 4000 235 6 Cyl H D Thriftmaster UA 4000 235 6 Cyl H D Thriftmaster with Hydramatic UD 4000 265 8 Cyl Taskmaster HA 5000 265 8 Cyl Taskmaster E 5000 265 8 Cyl Taskmaster with Powermatic EA 6000 235 6 Cyl Thriftmaster U 6000 261 6 Cyl Jobmaster TA 6000 261 6 Cyl Jobmaster with Powermatic TD 6000 265 8 Cyl Taskmaster H 6000 265 8 Cyl Taskmaster with Powermatic JB 7000 265 8 Cyl Taskmaster K 7000 265 8 Cyl Taskmaster with Powermatic KA 7000 265 8 Cyl Taskmaster with Air Hydraulic Brake KC 7000 265 8 Cyl Taskmaster with Powermatic and Air Hydraulic Brake KD 7000 265 8 Cyl Taskmaster with 4BC KE 7000 265 8 Cyl Taskmaster with 4BC and Powermatic KF 7000 265 8 Cyl Taskmaster with 4BC and Air Hydraulic Brake and Powermatic KG 7000 265 8 Cyl Taskmaster with 4BC and Air Hydraulic Brake KH 8000 265 8 Cyl Taskmaster L 8000 265 8 Cyl Taskmaster with Powermatic LA 8000 265 8 Cyl Taskmaster with Air Hydraulic LC 8000 265 8 Cyl Taskmaster with Powermatic and Air Hydraulic Brake LD 8000 265 8 Cyl Taskmaster with 4BC LE 8000 265 8 Cyl Taskmaster with 4BC and Powermatic LF 8000 265 8 Cyl Taskmaster with 4BC and Air Hydraulic Brake LG 8000 265 8 Cyl Taskmaster with 4BC and Air Hydraulic Brake and Powermatic LH 9 10000 322 8 Cyl Loadmaster CS2 9 10000 322 8 Cyl Loadmaster with Powermatic V CA2 9 10000 322 8 Cyl Loadmaster with 4BC CS4 9 10000 322 8 Cyl Loadmaster with 4BC and Powermatic CA4 A stamped following suffix when this engine is used in 3600 Series and B when used in 3800 Series A stamped following suffix when this engine is used in 3600 Series and B if used in 3800 Series and C if used in 3100 and 3200 Series Six cylinder and 8 cylinder are numbered separately with each type engine numbered in sequence starting with 0001001 F will designate Flint engine T will designate Tonawanda engine EXAMPIE I The 50th 2100 Series regular production 235 6 cylinder engine built at Flint carries Serial No 0001050 F56Z if built at Tonawanda 0001050 T56Z 1957 5000 283 8 Cyl Taskmaster N 5000 283 8 Cyl Taskmaster with Powermatic NA 5000 283 8 Cyl Taskmaster with 4BC NC 5000 283 8 Cyl Taskmaster with Powermatic and 4BC ND 6000 261 6 Cyl Jobmaster K 6000 261 6 Cyl Jobmaster with Powermatic KC 6000 283 8 Cyl Taskmaster P 6000 283 8 Cyl Taskmaster with Powermatic PA 6000 283 8 Cyl Taskmaster with 4BC PC 6000 283 8 Cyl Taskmaster with Powermatic and 4BC PD 7000 283 8 Cyl Taskmaster R 7000 283 8 Cyl Taskmaster with Powermatic RA 7000 283 8 Cyl Taskmaster with Air Hydraulic Brake V RD 7000 283 8 Cyl Taskmaster with Air Hydraulic Brake and Powermatic RE 7000 283 8 Cyl Taskmaster with 4BC RF 7000 283 8 Cyl Taskmaster with Powermatic and 4BC RG 7000 283 8 Cyl Taskmaster with Air Hydraulic Brake Powermatic and 4BC RH 7000 283 8 Cyl Taskmaster with Air Hydraulic Brake and 4BC RJ 1969 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 21