The Engine Suffix Code is stamped on a block pad located immediately forward of the right hand or passenger side cylinder head. The entire engine Code contains the assembly plant, month and day along with the engine suffix Code. For help go to engine Code help or engine decoding FAQ.



Choose Group to View Small Block Engine Suffix Codes

Chevy Small Block Engine Suffix Codes [G-K]

Code Year CID HP BBL Appl
GA 1965 283 195 2 3 spd trans. std
GB 1969 327 195 2 tur 400, taxi
GC 1955 265 - overdrive
GC 1965 283 195 2 m/t, 4 sp, H. D. chass
GD 1957 283 8 turglide
GE 1956 265 205 - o/d, Power Pack
GE 1969 350 - Powerglide
GF 1955 265 - m/t, 3 spd, a/c
GF 1957 283 FI turglide
GF 1965 283 195 2 Powerglide
GF 1969 283 195 2 Powerglide
GJ 1955 265 - H.D. clutch
GK 1955 265 - H.D. clutch, a/c
GK 1965 283 195 4 a/c
GL 1955 265 4 Power Pack, m/t
GL 1965 283 4 glide
GM 1955 265 4 Pwr Pack, a/c, m/t
GN 1955 265 4 Pwr Pack, o/d, a/c
GO 1967 283 195 2 glide, A.I.R.
GQ 1955 265 - o/d, a/c
GR 1955 265 195 4 m/t, 3 spd
GR 1956 265 225 8 m/t, 3 spd
GS 1966 283 195 2 4 spd, air cond.
GT 1966 283 195 2 A.I.R., glide
GU 1967 283 240 8 m/t, H.D. clutch
GV 1956 265 210 4 Powerglide
GW 1966 283 4 -
GX 1966 283 4 A.I.R.
GZ 1966 283 4 A.I.R., glide
HA 1965 327 275 4 4 spd tran. std
HA 1969 350 300 4 manual trans
HAH 1966 327 275 4 manual, Holley Carb
HAR 1966 327 275 4 manual, Rochester Carb
HB 1965 327 300 4 std trans., hi perf.
HB 1967 327 275 4 A.I.R.
HB 1968 327 275 4 H.D. clutch
HB 1969 350 300 4 tur hydro trans.
HB 1966 327 275 4 A.I.R.
HC 1965 327 275 4 Powerglide
HC 1969 350 250 2 m/t
HC 1967 327 275 4 Powerglide
HC 1968 327 275 4 Powerglide
HCH 1966 327 275 4 powerglide, Holley Carb
HCR 1966 327 275 4 powerglide, Rochester Carb
HD 1965 327 - Powerglide, h/p
HD 1966 327 350 4 a/c, spec high perf.
HD 1969 350 250 2 tur hydro trans.
HE 1965 327 300 4 m/t
HE 1969 350 300 4 Powerglide
HF 1965 327 300 4 Manual, h/p
HF 1966 327 275 4 Powerglide, A.I.R.
HF 1969 350 250 2 Powerglide
HF 1978 350 170 4 LM1
HF 1968 327 275 4 THM
HG 1965 327 375 FI fuel inject, m/t
HG 1968 327 250 2 Powerglide
HG 1969 350 300 4 manual trans.
HH 1965 327 365 4 s h/p, m/t
HH 1966 327 300 4 air inj. reactor
HH 1969 350 300 4 tur 400
HI 1965 327 250 4 a/c, m/t
HI 1968 327 250 4 m/t
HI 1969 350 250 2 -
HJ 1965 327 300 4 h/p, a/c, m/t
HJ 1968 327 250 4 Powerglide
HJ 1969 327 250 2 tur 400
HJ 1969 350 250 2 tur 400
HJ 1978 350 170 4 LM1
HK 1965 327 365 4 s h/p, a/c, m/t
HK 1968 327 250 4 Powerglide
HK 1969 350 300 4 Powerglide
HL 1965 327 365 4 trans ign, m/t
HL 1968 327 250 4 m/t, H.D. clutch
HL 1969 350 250 2 Powerglide
HL 1978 350 170 4 LM1
HM 1965 327 365 4 a/c, trans ign, m/t
HM 1968 327 250 4 tur hydramatic
HM 1969 350 250 2 a/t
HN 1965 327 375 FI t/ign., m/t, Hi-lift cam
HN 1968 327 250 4 Pwrglide, reg gas
HN 1969 350 300 4 turbo 350, high perf.
HO 1965 327 300 4 Powerglide
HO 1969 350 300 4 -
HP 1965 327 300 4 Powerglide, h/p
HP 1969 350 300 4 m/t
HQ 1965 327 250 4 Powerglide, a/c
HQ 1969 350 255 4 manual trans.
HR 1965 327 300 4 Pwrglide, h/p, a/c
HR 1969 350 255 4 Powerglide
HR 1978 350 170 4 LM1
HS 1969 350 255 4 tur 350
HT 1965 327 350 4 s h/p, hyd lift, m/t
HT 1969 350 255 4 manual trans.
HU 1965 327 350 4 h/p, hylft, a/c, m/t
HU 1969 350 255 4 Powerglide
HV 1965 327 350 4 h/p, hyd lif, t/ig, m/t
HV 1969 350 255 4 turbohydro 350
HW 1965 327 350 4 s/hp, hl, ti, ac, m/t
HW 1969 350 350 4 hi perf eng, m/t
HX 1969 350 350 4 high perf, a/c, m/t
HY 1969 350 300 4 tur 350
HY 1969 350 300 4 m/t 4 spd
HZ 1969 350 300 4 tur 400
IA 1969 350 255 4 tur 400
ID 1966 327 4 spec. high perf.
IL 1969 350 2 man trans., taxi
IM 1969 350 2 Powerglide, taxi
IN 1969 350 2 tur 350, taxi
IP 1969 350 2 tur 400, taxi
IQ 1969 350 4 m/t, police, taxi
IR 1969 350 4 m/t, police, taxi
IS 1964 327 ??? - m/t, spec. hi perf.
IS 1969 350 4 glide, taxi, pol.
IT 1969 350 4 tur 350, taxi
IV 1969 350 4 tur 400, taxi
IW 1969 350 4 man trans., taxi
IX 1969 350 4 glide, taxi, pol.
IY 1969 350 4 tur 350, taxi
IZ 1969 350 4 tur 400, taxi
J 1964 283 195 2 man trans., 3 spd
JA 1964 283 195 2 man trans., 4 spd
JD 1964 283 195 2 Powerglide
JG 1964 283 220 4 Powerglide
JH 1964 283 220 4 man trans., 3 spd
JQ 1964 327 250 4 man trans.
JR 1964 327 300 4 m/t, high perf.
JT 1964 327 250 4 m/t, trans ign
KE 1967 327 275 4 m/t, 4 spd
KE 1966 327 275 4 m/t, 4 spd
KH 1966 327 350 4 s h/p, A.I.R., a/c
KL 1967 327 275 4 tur 350
KM 1967 327 275 4 a/t, A.I.R.