262 - 400 Codes: CM - CZX

Abbreviations: A.I.R. = Air Injection Reactor, AT = Automatic Transmission (specific type uncertain), FI = Fuel Injection, HDC = Heavy Duty Clutch, MT = Manual Transmission, TBI = Throttle Body Injection, TPI = Tuned Port Injection, TH = Turbo Hydramatic Transmission (model uncertain), TH350 = Turbo Hydramatic 350 Transmission, TH400 = Turbo Hydramatic 400 Transmission, LC = Low Compression, NB2 = CA vehicles with A.I.R. and longer valve overlap camshaft, OD = 3-speed Overdrive, PG = Powerglide Transmission, T/A = Trans Am, YF5 = CA vehicles with A.I.R. and longer valve overlap camshaft.

GM body platform letters A (Chevelle), B (Passenger), F (Camaro/Firebird), G (Malibu/Monte Carlo), X (Nova) = GM body platforms and are used instead of Passenger, Chevelle, etc. Police and Taxi imply passenger car unless otherwise noted. A body platform includes Chevelle and Monte Carlo unless otherwise noted.

(n/a or blank = information not available) - [ Return to Engine Codes Index ]

Code Year CID HP Trans Platform/Comments
CM 1960-61 283 230 MT B, A/C
CMA 1972 307 130 TH350 A (Chevelle), F, NB2
CMA 1974 350 145 TH350 F, X
CMB 1972 350 165 TH F, NB2
CMB 1975 350 155 MT F, X, federal
CMC 1974 350 145 MT A, F, X
CMD 1972 350 165 TH350 A, NB2
CMD 1974 350 145 TH350 B, police/taxi
CMF 1975 350 155 MT A (Monte Carlo), California
CMH 1972 350 165 MT F, NB2
CMH 1974 350 160 TH400 B
CMH 1975 350 155 TH A
CMJ 1974 350 160 TH400 B, police
CMJ 1975 350 145 TH350/400 A (Chevelle), B, federal
CMK 1974 350 160 TH400 B, YF5, police
CML 1975 350 155 TH F, X, California
CMM 1973 350 175 TH400 A (Chevelle wagon)
CMM 1975 350 155 TH A (Chevelle), B, California
CMR 1974 350 145 TH350/400 A, B
CMR 1978 350 220 MT Corvette
CMS 1974 350 185 MT F, some YF5
CMS 1978 350 220 AT Corvette
CMT 1974 350 245 TH400 Z28, some YF5
CMU 1975 350 145 MT A, F, X
CNC 1970 307 200 MT A (Chevelle), F, X
CND 1970 307 200 MT A (Chevelle), F, X, 4-speed
CNE 1970 307 200 PG A (Chevelle), F,  X
CNF 1970 307 200 TH350 A (Chevelle), F,  X
CNG 1970 307 200 MT A (Chevelle), X, LC
CNH 1970 307 200 PG A (Chevelle), X, LC
CNI 1970 350 250 MT A, F, X
CNJ 1970 350 300 MT A, F, X
CNK 1970 350 300 PG A, F, X
CNM 1970 350 250 PG A, F, X, PG
CNN 1970 350 250 TH350 A, F, X, TH350
CNO 1970 350 250 MT B
CNP 1970 350 250 MT B, police/taxi
CNQ 1971 350 250 MT B
CNR 1970 350 300 TH350 B
CNS 1970 350 300 PG B, police/taxi
CNT 1970 350 300 TH350 B, police/taxi, TH350
CNU 1970 350 250 PG B
CNV 1970 350 250 TH350 B
CNW 1970 350 250 PG B, police/taxi
CNX 1970 350 250 TH350 B, police/taxi
CNY 1970 350 250 TH350 B, LC
CNZ 1970 350 250 PG B, LC
CQ 1958-61 283 230 MT Corvette
CR 1958-61 283 250 MT Corvette, FI
CR* 1964 283 220 MT X
CRD 1972 350 165 TH F, A.I.R.
CRE 1970 350 300 TH350 A, F, X
CRG 1972 350 165 MT F, A.I.R.
CRH 1970 400 265 TH350 A (Monte Carlo)
CRK 1972 350 175 TH X, A.I.R.
CRL 1972 350 175 MT X, A.I.R.
CRT 1972 350 255 MT Corvette, A.I.R.
CRX 1975 350 145 TH350 A (Monte Carlo), F, X, federal
CS 1958-61 283 290 MT Corvette, FI, hi-lift cam
CS* 1964 283 220 MT X, A/C
CSA 1973 400 150 TH350/400 B
CSA 1975 400 175 TH350/400 B, police/taxi, NB2, California
CSB 1973 400 150 TH350/400 B, police
CSB 1975 400 175 TH350/400 A, B, NB2, California
CSC 1973 400 150 TH350 B, police, NB2
CSC 1975 400 175 TH350/400 A (Chevelle)
CSD 1973 400 150 TH350/400 B, police
CSD 1975 400 175 TH350/400 A (Chevelle), NB2
CSH 1972 350 165 TH350/400 A, (Chevelle, police), B
CSJ 1973 400 150 TH350 B, wagon, NB2
CSK 1973 400 150 TH350 B, wagon
CSL 1973 400 150 TH350 B, police wagon, NB2
CSM 1973 400 150 TH350 B, police wagon
CSM 1975 400 175 TH350/400 A (Chevelle wagon), NB2
CSU 1974 400 180 TH350 A (Chevelle
CSU 1974 400 180 TH400 A (Monte Carlo), B, HEI
CSW 1974 400 150 TH400 B, police, HEI
CSY 1974 400 180 TH400 B, wagon, HEI
CSZ 1974 400 180 TH400 B, police wagon, HEI
CT 1958-61 283 245 MT Corvette, 2x4
CTA 1974 400 150 TH400 A, B
CTB 1970 350 360 MT Z28
CTB 1974 400 150 TH400 B, police
CTC 1970 350 360 TH400 Z28
CTC 1974 400 180 TH350/400 A, B, YF5
CTD 1970 350 300 MT Corvette
CTD 1974 400 175 TH400 B, wagon
CTG 1970 350 300 TH400 Corvette
CTH 1970 350 350 MT Corvette
CTH 1974 400 180 TH400 B, police, HEI, YF5
CTJ 1970 350 350 MT Corvette, A/C
CTJ 1974 400 180 TH400 B, police wagon
CTK 1970 350 370 MT Corvette (after 3/24/1970)
CTK 1972 307 130 TH350 A (Chevelle), F, X
CTK 1974 400 180 TH400 B, police, YF5
CTL 1970 350 300 MT Corvette
CTL 1972 350 165 TH350 A, F, X
CTL 1975 400 175 TH A (Monte Carlo), B, NB2, California
CTM 1970 350 300 TH400 Corvette
CTM 1975 350 155 TH B, police/taxi, California
CTM 1975 400 175 TH350/400 B, police wagon, NB2
CTN 1970 350 350 MT Corvette
CTO 1970 350 350 MT Corvette, A/C
CTP 1970 350 350 MT Corvette, TI
CTQ 1970 350 350 MT Corvette, TI, A/C
CTU 1970 350 370 MT Corvette, TI, w/o P/S, (early)
CTU 1975 400 175 TH350/400 A (Chevelle), B, California
CTV 1970 350 370 MT Corvette, ZR1
CTW 1975 350 155 TH B, police/taxi, California
CTW 1975 400 175 TH350/400 B, police
CTX 1975 400 175 TH350/400 A (Chevelle)
CTY 1975 400 175 TH350/400 B, wagon
CTZ 1975 400 175 TH350/400 B, police/taxi, wagon
CU 1958-61 283 270 MT Corvette, 2x4, hi-lift cam
CUA 1975 350 165 MT Corvette
CUB 1975 350 165 MT Corvette
CUD 1975 350 205 MT Corvette
CUT 1978 350 185 AT Corvette
CY 1960-61 283 275 MT Corvette, FI, alum heads (no verification of delivery)
CZ 1960-61 283 315 MT Corvette, FI, alum heads, hi-lift cam
CZA 1975 262 110 MT Monza, California
CZB 1975 262 110 TH Monza, California
CZJ 1975 262 110 MT X, California
CZK 1975 262 110 TH X, California
CZL 1975 262 110 MT X, A.I.R., federal
CZM 1975 262 110 TH X, A.I.R., federal
CZT 1975 262 110 MT Monza, A.I.R., federal
CZU 1975 262 110 TH Monza, A.I.R., federal
CZX 1970 400 265 MT A (Monte Carlo)