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ENGINE CODES
 
 

CORVAIR
 
1960
Code Prefix
1961
Code Prefix
6-140
80hp, 8:1, 2-1brl
 YC 6-145
80hp, 8:1, 2-1brl
 Y
6-140
95hp, 8:1, 2-1brl
 YD 6-145
80hp, 8:1, 2-1brl
 YC
6-140
80hp, 8:1, 2-1brl
 YH 6-145
80hp, 8:1, 2-1brl
 YF
6-140
80hp, 8:1, 2-1brl
 YL 6-145
80hp, 8:1, 2-1brl
 YH
6-140
95hp, 8:1, 2-1brl
 YM 6-145
98hp, 9:1, 2-1brl
 YJ
6-140
95hp, 8:1, 2-1brl
 YN 6-145
80hp, 8:1, 2-1brl
 YL
6-140
80hp, 8:1, 2-1brl, A/T
 Z 6-145
98hp, 9:1, 2-1brl
 YM
6-140
80hp, 8:1, 2-1brl, A/T
 ZB 6-145
98hp, 9:1, 2-1brl
 YN
6-140
80hp, 8:1, 2-1brl, A/T
 ZD 6-145
98hp, 9:1, 2-1brl
 YN
6-140
95hp, 8:1, 2-1brl, A/T
 ZF 6-145
80hp, 8:1, 2-1brl, A/T
 ZB
6-140
95hp, 8:1, 2-1brl, A/T
 ZG 6-145
80hp, 8:1, 2-1brl, A/T
 ZD
6-140
80hp, 8:1, 2-1brl, A/T
 ZH 6-145
98hp, 9:1, 2-1brl, A/T
 ZF
6-140
80hp, 8:1, 2-1brl, A/T
 ZJ 6-145
98hp, 9:1, 2-1brl, A/T
 ZG
  6-145
80hp, 8:1, 2-1brl, A/T
 ZH
6-145
80hp, 8:1, 2-1brl, A/T
 ZJ
6-145
98hp, 9:1, 2-1brl, A/T
 ZK
6-145
98hp, 9:1, 2-1brl, A/T
 ZL
 
1962
1963
6-145
102hp, 9:1, 2-1brl
 Y
6-145
150hp, 9:1, 2-1brl, T/C, M/T
 Y
6-145
80hp, 8:1, 2-1brl, T/C, 4 Spd
 YC 6-145
80hp, 8:1, 2-1brl, T/C, 4 Spd
 YC
6-145
80hp, 8:1, 2-1brl, M/T
 YH 6-145
80hp, 8:1, 2-1brl, A/C, M/T
 YL
6-145
80hp, 8:1, 2-1brl, A/C, M/T
 YL 6
102hp, 9:1, 2-1brl, A/C, HPE
 YM
6
102hp, 9:1, 2-1brl, A/C, HPE
 YM 6-145
102hp, 9:1, 2-1brl, M/T, H.P.E
 YN
6-145
102hp, 9:1, 2-1brl, M/T, H.P.E
 YN 6-145
80hp, 8:1, 2-1brl, A/T
 Z
6-145
102hp, 9:1, 2-1brl
 YQ 6-145
80hp, 8:1, 2-1brl, A/C, A/T
 ZD
6-145
150hp, 9:1, 2-1brl, T/C, 4 Spd
 YR 6-145
102hp, 9:1, 2-1brl, A/T, H.P.E
 ZF
6-145
80hp, 8:1, 2-1brl, A/T
 Z 6-145
102hp, 9:1, 2-1brl, A/T, A/C, H.P.E
 ZG
6-145
80hp, 8:1, 2-1brl, A/T
 ZB 6-145
84hp, 9:1, 2-1brl, A/T
 ZH
6-145
80hp, 8:1, 2-1brl, A/C, A/T
 ZD  
6-145
102hp, 9:1, 2-1brl, A/T, H.P.E
 ZF
6-145
102hp, 9:1, 2-1brl, A/T, A/C, H.P.E
 ZG
6-145
84hp, 9:1, 2-1brl, A/T
 ZH
6-145
84hp, 9:1, 2-1brl, A/T, A/C
 ZJ
6-145
102hp, 9:1, 2-1brl, A/T, A/C
 ZK
6-145
84hp, 9:1, 2-1brl, A/T
 ZL
 
1964
1965
6-145
95hp, 8.25:1, 2-1brl, T/C, 4 Spd
 YC 6-164
95hp, 8.5:1, 2-1brl, M/T, A/T
 RA
6-145
95hp, 8.25:1, 2-1brl, A/C, M/T
 YL 6-164
140hp, 9.25:14-1brl, M/T
 RB
6
110hp, 9.25:1, 2-1brl, A/C, HPE
 YM 6-164
110hp,9.25:1, H.P.E
 RD
6-145
110hp, 9.25:1, 2-1brl, M/T, H.P.E
 YN 6-164
95hp, 8.5:1, 2-1brl, A/C
 RE
6-145
150hp, 8.25:1, 2-1brl, T/C, 4 Spd
 YR 6-164
110hp, 9.25:1 2-1brl, H.P.E, A/C
 RF
6-145
95hp, 8.25:1, 2-1brl, A/T
 Z 6-164
95hp, 8.5:1, 2-1brl, P/G
 RG
6-145
95hp, 8.25:1, 2-1brl, A/C, A/T
 ZD 6-164
110hp, 9.25:1, 2-1brl, P/G, H.P.E
 RH
6-145
110hp, 9.25:1, 2-1brl, A/T, H.P.E
 ZF 6-164
95hp, 8.5:1, 2-1brl, P/G, A/C
 RJ
6-145
110hp, 9.25:1, 2-1brl, A/T, A/C, H.P.E
 ZG 6-164
110hp, 9.25:1, 2-1brl, P/G, A/C, H.P.E
 RK
6-145
95hp, 8.25:1, 2-1brl, A/T
 ZH 6-164
180hp, 8.25:1, T/C
 RL
  6-164
140hp, 9.25:1, 4-1brl, M/T, SHPE
 RM
6-164
140hp, 9.25:1, 4-1brl, SHPE, P/G
 RN
6-164
95hp, 8.25:1, 2-1brl,M/T, A.I.R
 RS
6-164
110hp, 9.25:1, 2-1brl, M/T, A.I.R, H.P.E
 RU
6-164
95hp, 8.25:1, 2-1brl, P/G, A.I.R
 RV
6-164
110hp, 9.25:1, 2-1brl, P/G, A.I.R, H.P.E
 RX
 
1966
1967
6-164
95hp, 8.25:1, 2-1brl, M/T, A/T
 RA 6-164
95hp, 8.25:1, 2-1brl, M/T, A/T
 RA
6-164
140hp, 9.25:14-1brl, M/T
 RB 6-164
110hp, 9:1, 2-1BRL, H.P.E
 RD
6-164
110hp, 9.25:1, H.P.E
 RD 6-164
95hp, 8.25:1, 2-1brl, A/C
 RE
6-164
95hp, 8.25:1, 2-1brl, A/C
 RE 6-164
110hp, 9:1, 2-1brl, H.P.E, A/C
 RF
6-164
110hp, 9.25:1 4-1brl, H.P.E, A/C
 RF 6-164
95hp, 8.25:1, 2-1brl, P/G
 RG
6-164
95hp, 8.25:1, 2-1brl, P/G
 RG 6-164
110hp, 9.25:1, 2-1brl, P/G, H.P.E
 RH
6-164
110hp, 9.25:1, 2-1brl, P/G, H.P.E
 RH 6-164
95hp, 8.5:1, 2-1brl, P/G, A/C
 RJ
6-164
95hp, 8.5:1, 2-1brl, P/G, A/C
 RJ 6-164
110hp, 90:1, 2-1brl, P/G, A/C, H.P.E
 RK
6-164
110hp, 9.25:1, 2-1brl, P/G, A/C, H.P.E
 RK 6-164
95hp, 8.25:1, 4-1brl, M/T, A.I.R
 RS
6-164
180hp, 8.25:1, T/C
 RL 6-164
110hp, 90:1, 2-1brl, M/T, A.I.R, H.P.E
 RU
6-164
140hp, 9.25:1, 4-1brl, M/T, SHPE
 RM 6-164
95hp, 8.25:1, 2-1brl, P/G, A.I.R
 RV
6-164
140hp, 9.25:1, 4-1brl, SHPE, P/G
 RN 6-164
110hp, 90:1, 2-1brl, P/G, A.I.R, H.P.E
 RW
6-164
140hp, 9.25:1, 4-1brl, SHPE, A.I.R, M/T
 RQ 6-164
95hp, 8.25:1, 2-1brl
 QM
6-164
140hp, 9.25:1, 4-1brl, A/C, M/T
 RR 6-164
95hp, 8.25:1, 2-1brl, P/G, A/C, A.I.R
QO
6-164
95hp, 8.25:1, 4-1brl, M/T, A.I.R
 RS 6-164
110hp, 9:1, 2-1brl, P/G, A/C, A.I.R, HPE
 QP
6-164
140hp, 9.25:1, 4-1brl, M/T
 RT 6-164
110hp, 9:1, 2-1brl, HPE, A/C, A.I.R
 QS
6-164
110hp, 9.25:1, 2-1brl, M/T, A.I.R, H.P.E
 RU  
6-164
95hp, 8.25:1, 2-1brl, P/G, A.I.R
 RV
6-164
110hp, 9.25:1, 2-1brl, P/G, A.I.R, H.P.E
 RW
6-164
140hp, 9.25:1, 4-1brl, P/G, A.I.R, H.P.E
 RX
6-164
140hp, 9.25:1, 4-1brl, P/G, A/C, A.I.R
 RY
6-164
140hp, 9.25:1, 4-1brl, SHPE, A/C
 RZ
 
1968
1969
6-164
95hp, 8.25:1, 2-1brl, A/C
 RE 6-164
95hp, 8.25:1, 2-1brl, M/T
 AC
6-164
110hp, 9.25:1, 2-1brl, H.P.E, A/C
 RF 6-164
110hp, 9.25:1, 2-1brl, H.P.E
 AD
6-164
95hp, 8.25:1, 2-1brl, P/G, A/C
 RJ 6-164
95hp, 8.25:1, 2-1brl, P/G
 AE
6-164
110hp, 9.25:1, 2-1brl, P/G, A/C, H.P.E
 RK 6-164
110hp, 9.25:1, 2-1brl, P/G, H.P.E
 AF
6-164
95hp, 8.25:1, 2-1brl, M/T, A.I.R
 RS 6-164
140hp, 9.25:1, 4-1brl, SPHE
 AG
6-164
110hp, 9.25:1, 2-1brl, M/T, A.I.R, H.P.E
 RU 6-164
140hp, 9.25:1, 4-1brl, P/G, H.P.E
 AH
6-164
95hp, 8.25:1, 2-1brl, P/G, A.I.R
 RV  
6-164
110hp, 9.25:1, 2-1brl, P/G, A.I.R, H.P.E
 RW
6-164
140hp, 9.25:1, 4-1brl, A/C, A.I.R
 RY
6-164
140hp, 9.25:1, 4-1brl, SHPE, A/C, P/G
 RZ
 
 

Configuration:

A/C: Air conditioned

A.I.R: Air injection reactor

A/T: Automatic trans

HPE: High performance engine

M/T: Manual trans

P/G: Powerglide

SHPE: Special Hi Perf.

T/C: Turbocharged engine
 
The engine code decoder reveals the stamp location, engine displacement, horse power, compression ratio, and Carburetor configuration.
 
Engine Build Date Codes