ENGINE SERIES NUMBER AND SUFFIX CHART 1970 V Al I V V I Tv V Modal Description H P Description 250 6 CYLINDER I A A C 40S 40 P 40 Manual Transmission and L P Gas 155 TNO C 40 P 40 Manual Transmission and L P Gas V 155 TNP 292 6 CYLINDER I C 40 P 40 S 40 Manual Transmission 170 TNF C 50S 50 Allison Auto 170 TNG C 50 Allison Auto 170 TNH V C 40 P 40 Manual Transmission and L P Gas 170 TNI C 50 Allison Auto 170 TNJ C 50 Manual Transmission 170 TNK M 50 60 Manual Transmission 170 TNM C 50 Manual Transmission 170 TNN T 50 Manual Transmission 170 TOO T 50 Manual Transmission 170 TQZ 350 8 CYLINDER C 40 Manual Transmission 215 TTO I C 50 M 50 S 50 Manual Transmission 215 TTP C 50 S 50 Allison Auto 215 TTQ C 50 S 50 L Manual w Air Brake 215 TTR C 50 S 50 Allison Auto 215 TTS T 50 Manual Transmission 215 TMB C 40 Manual Transmission and L P Gas 215 TTT C 50 M 50 Allison Auto and L P Gas 215 TTU C 50 Allison and L P Gas TTV T 50 Manual and L P Gas TME I 366 8 CYLINDER l I C 50 S 50 M 50 I Allison Auto 235 I TTW C 50 60 M 60 Allison and L P Gas 235 TTX V C 60 M 60 S 60 Manual Transmission 235 TMC T 60 4 Speed Manual Transmission 235 TMF T 60 i 4 Speed Manual Transmission and L P Gas 235 TMG C 50 60 M 60 4 Speed Manual Transmission and L P Gas V235 TYX T 50 60 Manual Transmission 235 TMD T 50 60 Manual Transmission and L P Gas 235 TMH 427 8 CYLINDER C 60 M 60 Manual Transmission 260 TTZ T 50 60 Manual Transmission 260 TMI 0 L GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM 34