C3 Corvette Engine Identification Codes

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1968 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
HE 327 Base 300 Rochester Q-jet & Manual Transmission
HO 327 Base 300 Rochester Q-jet & Turbo Hydra-Matic
HP 327 L79 350 Rochester Q-jet, A/C, P/S & Manual Transmission
HT 327 L79 350 Rochester Q-jet, Special Cam & 4-Speed
IL 427 L36 390 Rochester Q-jet, Hydraulic Lifters & 4 Speed
IQ 427 L36 390 Rochester Q-jet, Hydraulic Lifters & Turbo Hydra-Matic
IM 427 L68 400 L36 Engine with Holley 3x2BC & 4-Speed
IO 427 L68 400 L36 Engine with Holley 3x2BC & Turbo Hydra-Matic
IR 427 L71 435 Holley 3x2BC, Mechanical Lifters & 4-Speed
IU 427 L89 435 L71 Engine with Aluminum Heads & 4-Speed
IT 427 L88 430 Holley 1x4BC, Heavy-Duty Engine & M22 4-Speed

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1969 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
HY 350 Base 300 Rochester Q-jet & Manual Transmission
HZ 350 Base 300 Rochester Q-jet & Turbo Hydra-Matic
HW 350 L46 350 Rochester Q-jet, Special Cam & 4-Speed
HX 350 L46 350 Rochester Q-jet, Special Cam, A/C & 4-Speed
GD 350 L46 350 Rochester Q-jet, Special Cam, A/C, K66 & 4-Speed
LM 427 L36 390 Rochester Q-jet, Hydraulic Lifters & 4-Speed
LL 427 L36 390 Rochester Q-jet, Hydraulic Lifters & Turbo Hydra-Matic
LQ 427 L68 400 L36 Engine with Holley 3x2BC & 4-Speed
LN 427 L68 400 L36 Engine with Holley 3x2BC & Turbo Hydra-Matic
LO 427 L88 430 Holley 1x4BC, Heavy-Duty Engine & M22 4-Speed
LV 427 L88 430 Holley 1x4BC, Heavy-Duty Engine & Turbo Hydra-Matic
LR 427 L71 435 Holley 3x2BC, Mechanical Lifters & 4-Speed
LX 427 L71 435 Holley 3x2BC, Mechanical Lifters & Turbo Hydra-Matic
LP 427 L89 435 L71 Engine with Aluminum Heads & 4-Speed
LW 427 L89 435 L71 Engine with Aluminum Heads & Turbo Hydra-Matic
LT 427 L71 435 Holley 3x2BC, Mechanical Lifters, MA6 & 4-Speed
LU 427 L89 435 L71 Engine with Aluminum Heads, MA6 & 4-Speed
ME 427 ZL1 430 ZL1 Performance Package (L88 Engine) & M22 4-Speed
MG 427 ZL1 430 ZL1 Perf Package (L88 Engine) & M22 Turbo Hydra-Matic
MH 427 L36 390 Rochester Q-jet, K66 & 4-Speed
MI 427 L36 390 Rochester Q-jet, K66 & Turbo Hydra-Matic
MJ 427 L68 400 L36 Engine with Holley 3x2BC, K66 & Turbo Hydra-Matic
MK 427 L68 400 L36 Engine with Holley 3x2BC, K66 & 4-Speed
MS 427 Central Office Production Order, Details Unknown
MR 427 L88 430 Holley 1x4BC, Heavy-Duty Engine & M22 4-Speed

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1970 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CTL 350 Base 300 Rochester Q-jet & 4-Speed
CTD 350 Base 300 Rochester Q-jet & 4-Speed
CTM 350 Base 300 Rochester Q-jet & Turbo Hydra-Matic
CTG 350 Base 300 Rochester Q-jet & Turbo Hydra-Matic
CTN 350 L46 350 Rochester Q-jet, Performance Cam & 4-Speed
CTH 350 L46 350 Rochester Q-jet, Performance Cam & 4-Speed
CTO 350 L46 350 Rochester Q-jet, Performance Cam, A/C & 4-Speed
CTJ 350 L46 350 Rochester Q-jet, Performance Cam, A/C & 4-Speed
CTP 350 L46 350 Rochester Q-jet, Performance Cam, T/I & 4-Speed
CTQ 350 L46 350 Rochester Q-jet, Performance Cam, A/C, T/I & 4-Speed
CTU 350 LT1 370 Holley 1x4BC, Mechanical Lifters, T/I & 4-Speed
CTK 350 LT1 370 Holley 1x4BC, Mechanical Lifters, T/I & 4-Speed
CTV 350 ZR1 370 Performance Package (LT1 Engine) & M22 4-Speed
CZU 454 LS5 390 Rochester Q-jet, Hydraulic Lifters & 4-Speed
CGW 454 LS5 390 Rochester Q-jet, Hydraulic Lifters & Turbo Hydra-Matic
CRI 454 LS5 390 Rochester Q-jet, Hydraulic Lifters, T/I & 4-Speed
CRJ 454 LS5 390 Rochester Q-jet, Hydraulic Lifters, T/I & Turbo Hydra-Matic
CZL 454 LS7* 465 Holley 1x4BC, Mechanical Lifters, Aluminum Heads & 4-Speed
CZN 454 LS7* 465 Holley 1x4BC, Mechanical Lifters, Aluminum Heads & THM

* Records indicate none were produced

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1971 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CJL 350 Base 270 Rochester Q-jet & 4-Speed
CGT 350 Base 270 Rochester Q-jet & Turbo Hydra-Matic
CJK 350 Base 270 Rochester Q-jet & Turbo Hydra-Matic
CGZ 350 LT1 330 Holley 1x4BC, Mechanical Lifters & 4-Speed
CGY 350 ZR1 330 Performance Package (LT1 Engine) & M22 4-Speed
CPH 454 LS5 365 Rochester Q-jet, Hydraulic Lifters & 4-Speed
CPJ 454 LS5 365 Rochester Q-jet, Hydraulic Lifters & Turbo Hydra-Matic
CPW 454 LS6 425 Holley 1x4BC, Mechanical Lifters, Aluminum Heads & 4-Speed
CPX 454 LS6 425 Holley 1x4BC, Mechanical Lifters, Aluminum Heads & THM

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1972 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CKW 350 Base 200 Rochester Q-jet & 4-Speed
CDH 350 Base 200 Rochester Q-jet, NB2 & 4-Speed
CKX 350 Base 200 Rochester Q-jet & Turbo Hydra-Matic
CDJ 350 Base 200 Rochester Q-jet, NB2 & Turbo Hydra-Matic
CKY 350 LT1 255 Holley 1x4BC, Mechanical Lifters & 4-Speed
CRT 350 LT1 255 Holley 1x4BC, Mechanical Lifters, K19 & 4-Speed
CKZ 350 ZR1 255 Performance Package (LT1 Engine) & M22 4-Speed
CPH 454 LS5 270 Rochester Q-jet, Hydraulic Lifters & 4-Speed
CPJ 454 LS5 270 Rochester Q-jet, Hydraulic Lifters & Turbo Hydra-Matic
CSR 454 LS5 270 Rochester Q-jet, Hydraulic Lifters, K19 & 4-Speed
CSS 454 LS5 270 Rochester Q-jet, Hydraulic Lifters, K19 & Turbo Hydra-Matic

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1973 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CKZ 350 L48 190 4-Speed
CLA 350 L48 190 Turbo Hydra-Matic 400
CLB 350 L48 190 4-Speed (California)
CLC 350 L48 190 Turbo Hydra-Matic 400 (California)
CLD 350 L82 250 Turbo Hydra-Matic 400
CLH 350 L82 250 Turbo Hydra-Matic 400 (California)
CLR 350 L82 250 4-Speed
CLS 350 L82 250 4-Speed (California)
CWM 454 LS4 275 4-Speed
CWR 454 LS4 275 Turbo Hydra-Matic 400
CWS 454 LS4 275 Turbo Hydra-Matic 400 (California)
CWT 454 LS4 275 4-Speed (California)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1974 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CKZ 350 L48 195 4-Speed
CLA 350 L48 195 Turbo Hydra-Matic 400
CLB 350 L48 195 4-Speed (California)
CLC 350 L48 195 Turbo Hydra-Matic 400 (California)
CLD 350 L82 250 Turbo Hydra-Matic 400
CLH 350 L82 250 Turbo Hydra-Matic 400 (California)
CLR 350 L82 250 4-Speed
CLS 350 L82 250 4-Speed (California)
CWM 454 LS4 270 4-Speed
CWR 454 LS4 270 Turbo Hydra-Matic 400
CWS 454 LS4 270 Turbo Hydra-Matic 400 (California)
CWT 454 LS4 270 4-Speed (California)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1975 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CHA 350 L48 165 4-Speed (Federal Emissions)
CHB 350 L48 165 Turbo Hydra-Matic 400 (Federal Emissions)
CHC 350 L82 205 4-Speed (Federal Emissions)
CHR 350 L82 205 Turbo Hydra-Matic 400 (Federal Emissions & California)
CHU 350 L48 165 4-Speed (Federal Emissions)
CHZ 350 L48 165 Turbo Hydra-Matic 400 (California Emissions)
CKC 350 L82 205 Turbo Hydra-Matic 400 (Federal Emissions)
CRJ 350 L48 165 4-Speed (Federal Emissions)
CRK 350 L48 165 Turbo Hydra-Matic 400 (Federal) Emissions
CRL 350 L82 205 4-Speed (Federal Emissions)
CRM 350 L82 205 Turbo Hydra-Matic 400 (Federal Emissions)
CUA 350 L48 165 4-Speed (Federal Emissions)
CUB 350 L48 165 4-Speed (Federal Emissions)
CUD 350 L82 205 4-Speed (Federal Emissions)
CUT 350 L82 205 4-Speed (Federal Emissions)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1976 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CHC 350 L82 210 4-Speed (Federal Emissions)
CKC 350 L82 210 Turbo Hydra-Matic 400 (Federal Emissions)
CKW 350 L48 180 4-Speed (Federal Emissions)
CKX 350 L48 180 Turbo Hydra-Matic 350 (Federal Emissions)
CLM 350 Unverified
CLR 350     Unverified
CLS 350 L48 180 Turbo Hydra-Matic 350 (California Emissions)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1977 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CHD 350 L48 180 Turbo Hydra-Matic 350 (California Emissions)
CKD 350 L48 180 Turbo Hydra-Matic 350 (High Altitude)
CKZ 350 L48 180 4-Speed (Federal Emissions)
CLA 350 L48 180 Turbo Hydra-Matic 350 (Federal Emissions)
CLB 350 L48 180 Turbo Hydra-Matic 350 (High Altitude)
CLC 350 L48 180 Turbo Hydra-Matic 350 (California Emissions)
CLD 350 L82 210 4-Speed (Federal Emissions)
CLF 350 L82 210 Turbo Hydra-Matic 400 (California Emissions)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1978 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
CHW 350 L48 185 4-Speed (Federal Emissions)
CLM 350 L48 185 Turbo Hydra-Matic 350 (Federal Emissions)
CLR 350 L48 175 Turbo Hydra-Matic 350 (California Emissions)
CLS 350 L48 175 Turbo Hydra-Matic 350 (High Altitude)
CMR 350 L82 220 4-Speed (Federal Emissions)
CMS 350 L82 220 Turbo Hydra-Matic 350 (Federal Emissions)
CUT 350 L48 185 Turbo Hydra-Matic 350 (Federal Emissions)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1979 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
ZAA 350 L48 195 4-Speed (Federal Emissions - Early)
ZAB 350 L48 195 Turbo Hydra-Matic 350 (Federal Emissions - Early)
ZAC 350 L48 195 Turbo Hydra-Matic 350 (California Emissions - Early)
ZAD 350 L48 195 Turbo Hydra-Matic 350 (High Altitude)
ZAF 350 L48 195 4-Speed (Federal Emissions)
ZAH 350 L48 195 Turbo Hydra-Matic 350 (Federal Emissions)
ZAJ 350 L48 295 Turbo Hydra-Matic 350 (California Emissions)
ZBA 350 L82 225 4-Speed (Federal Emissions)
ZBB 350 L82 225 Turbo Hydra-Matic 350 (Federal Emissions)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1980 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
ZAK 350 L48 190 Turbo Hydra-Matic 350 (Federal Emissions)
ZAM 350 L48 190 4-Speed (Federal Emissions)
ZBC 350 L82 230 Turbo Hydra-Matic 350 (Federal Emissions)
ZBD 350 L82 230 4-Speed (Federal Emissions)
ZCA 305 LG4 180 Turbo Hydra-Matic 350 (California Emissions)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1981 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
ZDA 350 L81 190 4-Speed (Federal Emissions)
ZDB 350 L81 190 Turbo Hydra-Matic 350 (California Emissions)
ZDC 350 L81 190 4-Speed (California Emissions)
ZDD 350 L81 190 Turbo Hydra-Matic 350 (Federal Emissions)

 

1968 1969 1970 1971

1972

1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

1982 Corvette Engine Identification Codes

Engine Code Cubic Inches Order Code HP Applicable Equipment
ZBA 350 L83 200 Turbo Hydra-Matic 700-R4 (Federal Emissions)
ZBC 350 L83 200 Turbo Hydra-Matic 700-R4 (California Emissions - Early)
ZBN 350 L83 200 Turbo Hydra-Matic 700-R4 (California Emissions)