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Small Block Chevy Suffix Codes: UTU - ZY
GM body designation. All these are identified here. Quickly, A = Chevelle, F = Camaro, X = Nova. If you're looking at the engine code - this is already known. If you're looking at the casting # information and it mentions 3970010 "A/F/X/Y/B".... basically this means "it's used in everything", whereas if it simply states "Y"... this means Corvette.
Abbreviations: AB = Air Brakes, AR = Air Injector Reactor, CA = California,
HD = Heavy Duty, hdc = heavy duty clutch, HP = High Performance, LP = Liquid Propane Gas,
PG = Powerglide, mt = manual trans, mt-3, 3 speed manual, SHP = Special High Performance,
TH = Turbo Hydramatic, ti = transistor ignition.
Induction is one (1) 4 barrel carburetor unless specified.
| RPO |
FY |
CID |
Appl |
VIN |
HP |
BBLS |
Body/Comments |
| UTU | 1978 | 305 | van & bus | U LG9 | 145 | 2 | C-10 & 1500 |
| UTW | 1978 | 305 | conv.cab | U LG9 | 145 | 2 | C-10 to 2500 |
| UTX | 1978 | 305 | conv.cab | U LG9 | 145 | 2 | C-10 to 2500 |
| UU | 1969 | 307 | m/t | | 200 | 2 | C-20 |
| UUB | 1983 | 350 | conv.cab | L LS9 | 165 | 4 | C-10 to 3500 |
| UUC | 1983 | 350 | conv.cab | L LS9 | 165 | 4 | C-10 to 3500 |
| UUD | 1983 | 350 | conv.cab | L LS9 | 165 | 4 | C-10 to 3500 |
| UUF | 1983 | 350 | conv.cab | L LS9 | 165 | 4 | C-10 to 3500 |
| UUH | 1983 | 350 | conv.cab | L LS9 | 165 | 4 | C-10 to 3500 |
| UUJ | 1983 | 350 | conv.cab | L LS9 | 165 | 4 | C-10 to 3500 |
| UV | 1969 | 307 | m/t | | 200 | 2 | K-20 |
| UW | 1969 | 307 | m/t | | 200 | 2 | K-20 |
| UYR | 1979 | 305 | conv. cab, m/t | G LG9 | 145 | 2 | C-10 to 2500 |
| UYS | 1979 | 305 | conv. cab, a/t | G LG9 | 145 | 2 | C-10 to 2500 |
| UZA | 1981 | 350 | con cab, m/t, exp | L LS9 | 165 | 4 | C-10 & 1500 |
| UZB | 1981 | 350 | con cab, a/t, exp | L LS9 | 165 | 4 | C-10 & 1500 |
| UZC | 1981 | 350 | con cab, m/t, exp | L LS9 | 165 | 4 | K-10 & 1500 |
| UZD | 1981 | 350 | con cab, a/t, exp | L LS9 | 165 | 4 | K-10 & 1500 |
| VB | 1969 | 350 | m/t | - | 255 | 4 | C-10 & 20 |
| VJZ | 1972 | 350 | m/t | - | 175 | 4 | C-10 & 20 |
| VR | 1969 | 350 | m/t, 3 spd | - | 255 | 4 | C-20 & 30 |
| VS | 1969 | 350 | m/t, 3 spd | - | 255 | 4 | K-20 |
| WA | 1965 | 283 | M/t | - | 175 | 2 | C-10 to 35 |
| WA | 1968 | 307 | M/t | - | 200 | 2 | C-10 to 25 |
| WA | 1969 | 350 | - | - | 255 | 4 | C-20 to 35 |
| WB | 1967 | 283 | m/t | - | 175 | 2 | K-10 to 25 |
| WB | 1968 | 307 | M/t | - | 200 | 2 | C-20 to 35 |
| WC | 1967 | 283 | tur hydro | | 175 | 2 | C-20 to 35 |
| WC | 1968 | 307 | m/t, 3 spd | - | 200 | 2 | C-10 to 35 |
| WD | 1967 | 283 | - | - | 175 | 2 | van 10 to 25 |
| WD | 1968 | 307 | - | - | 200 | 2 | van 10 to 25 |
| WE |
1965 | 283 | M/t | - | 175 | 2 | C-10 to 25 |
| WE |
1968 | 307 | Powerglide | - | 200 | 2 | C-10 |
| WF |
1966 | 283 | m/t, A.I.R. | - | 175 | 2 | C-10, 15, 20 |
| WF |
1968 | 307 | M/t | - | 200 | 2 | C-20 & 25 |
| WF |
1969 | 350 | - | - | 215 | 2 | C-50 |
| WG |
1967 | 283 | m/t | - | 175 | 2 | C-10 to 30 |
| WG |
1968 | 307 | m/t | - | 200 | 2 | C-20 & 30 |
| WH |
1966 | 283 | Powerglide, A.I.R. | - | 175 | 2 | C-10 to 25 |
| WH |
1968 | 307 | m/t | - | 200 | 2 | K-20 & 25 |
| WH |
1969 | 350 | m/t, A.I.R. | - | 255 | 4 | C-15, 25, 35 |
| WI |
1967 | 283 | m/t | - | 175 | 2 | K-10 to 25 |
| WI |
1968 | 307 | M/t | - | 200 | 2 | K-10 to 25 |
| WI |
1969 | 350 | - | - | 255 | 4 | C 25 & 35 |
| WJ |
1969 | 350 | Powerglide | - | 255 | 4 | C-10 to 35 |
| WK |
1969 | 350 | tur hydro | - | 255 | 4 | C-10 to 35 |
| WL |
1967 | 283 | - | - | 175 | 2 | van 10 to 25 |
| WL |
1968 | 307 | - | - | 200 | 2 | van 15 to 25 |
| WL |
1969 | 350 | Powerglide, A.I.R. | - | 255 | 4 | C-20 & 25 |
| WM |
1967 | 283 | - | - | 175 | 2 | van 10 to 25 |
| WM |
1968 | 307 | - | - | 175 | 2 | van 10 to 25 |
| WM |
1969 | 350 | - | - | 255 | 4 | C-20 to 35 |
| WN |
1968 | 307 | - | - | 200 | 2 | C-20 to 35 |
| WN |
1969 | 350 | m/t, A.I.R. | - | 255 | 4 | K-10 to 25 |
| WO |
1967 | 283 | m/t | - | 175 | 2 | K-10 & 20 |
| WO |
1968 | 307 | m/t, 3 spd |
- |
200 | 2 | C-10 to 30 |
| WO |
1969 | 350 | m/t |
- |
255 | 4 | K-20 & 25 |
| WP |
1968 | 307 | - |
- |
200 | 2 | C-20 to 35 |
| WP |
1969 | 350 | tur hydro |
- |
255 | 4 | K-10 to 25 |
| WQ |
1968 | 307 | - |
- |
200 | 2 | C-20 & 25 |
| WQ |
1969 | 350 | turbohydro, A.I.R. |
- |
255 | 4 | K-20 & 25 |
| WR |
1967 | 283 | turbohydro, A.I.R. |
- |
175 | 2 | C-10 to 25 |
| WR |
1968 | 307 | m/t, 3 spd |
- |
200 | 2 | C-20 to 35 |
| WR |
1969 | 350 | Powerglide |
- |
255 | 4 | C-20 & 30 |
| WS |
1969 | 350 | turhydro |
- |
255 | 4 | C-20 & 30 |
| WT |
1969 | 350 | M/t |
- |
255 | 4 | C-20 & 30 |
| WW |
1967 | 283 | - |
- |
175 | 2 | van 10 to 25 |
| WW |
1968 | 307 | - |
- |
200 | 2 | van 15 to 25 |
| WZ | 1969 | 350 | m/t, 3 spd | - | 255 | 4 | C-10 & 20 |
| XA | 1969 | 350 | m/t | - | 255 | 4 | C-10 to 35 |
| XB | 1969 | 350 | M/t | - | 255 | 4 | C-20 to 35 |
| XC | 1969 | 350 | Powerglide | - | 255 | 4 | C-10 to 25 |
| XD |
1969 | 350 | turhydro |
- |
255 | 4 | C-10 to 35 |
| XE |
1963 | 327 | universal service |
- |
- | - | cars |
| XE |
1969 | 350 | M/t |
- |
255 | 4 | C-20 & 30 |
| XF |
1969 | 350 | Powerglide |
- |
255 | 4 | C-10 to 35 |
| XG |
1969 | 350 | turbohydro |
- |
255 | 4 | C-10, 20, 30 |
| XH |
1969 | 350 | - |
- |
215 | 2 | C-40 |
| XI |
1969 | 350 | - |
- |
215 | 2 | C-50 & 60 |
| XJ |
1969 | 350 | - |
- |
215 | 2 | C-50 |
| XK |
1969 | 350 | - |
- |
215 | 2 | T-50 & 60 |
| XN |
1969 | 350 | - |
- |
215 | 2 | C-60 |
| XO |
1969 | 350 | turbohydro, A.I.R. |
- |
255 | 4 | K-20 |
| XP |
1969 | 350 | m/t, A.I.R. |
- |
255 | 4 | C-10 to 30 |
| XS |
1969 | 350 | - |
- |
215 | 2 | C-40 & 50 |
| XU |
1969 | 350 | - |
- |
215 | 2 | C-50 |
| XV |
1969 | 350 | - |
- |
215 | 2 | T-50 |
| XW |
1969 | 350 | m/t |
- |
255 | 4 | K-10 to 25 |
| XX |
1969 | 350 | m/t |
- |
255 | 4 | K-20 & 25 |
| XY |
1969 | 350 | turbohydro |
- |
255 | 4 | K-10 to 25 |
| XZ |
1969 | 350 | Powerglide,A.I.R. |
- |
255 | 4 | C-20 & 25 |
| YA |
1968 | 327 | |
- |
240 | 4 | C-20 to 35 |
| YB |
1968 | 327 | Powerglide |
- |
220 | 4 | C-10 |
| YC |
1966 | 327 | m/t, A.I.R. |
- |
220 | 4 | C-10 to 25 |
| YC |
1968 | 327 | m/t, A.I.R. |
- |
240 | 4 | C-10 to 25 |
| YD |
1966 | 327 | Powerglide,A.I.R. |
- |
220 | 4 | C-10 to 25 |
| YD |
1968 | 327 | Powerglide,A.I.R. |
- |
240 | 4 | C-10 to 25 |
| YH |
1966 | 327 | hydramatic |
- |
220 | 4 | C-30 |
| YH |
1967 | 327 | Powerglide,A.I.R. |
- |
220 | 4 | C-10 to 35 |
| YJ |
1967 | 327 | turbohydro,A.I.R. |
- |
220 | 4 | C-10 to 25 |
| YJ |
1968 | 327 | turbohydro,A.I.R. |
- |
240 | 4 | C-20 & 25 |
| YK |
1968 | 327 | m/t, 3 spd |
- |
240 | 4 | C-10 to 35 |
| YL |
1968 | 327 | M/t |
- |
240 | 4 | K-20 & 25 |
| YM |
1967 | 327 | m/t |
- |
220 | 4 | K-10 to 25 |
| YM |
1968 | 327 | m/t |
- |
240 | 4 | C-20 to 35 |
| YR |
1966 | 327 | Powerglide |
- |
220 | 4 | C-10 to 25 |
| YR |
1968 | 327 | Powerglide |
- |
240 | 4 | C-20 & 25 |
| YS |
1966 | 327 | m/t |
- |
220 | 4 | C-10 to 35 |
| YS |
1968 | 327 | m/t, 3 spd |
- |
220 | 4 | C-20 to 35 |
| YT |
1968 | 327 | Powerglide | | 220 | 4 | K-10 & 20 |
| YU |
1968 | 327 | m/t, 3 spd | - | 220 | 4 | K-20 |
| YV |
1968 | 327 | M/t | - | 220 | 4 | C-10 |
| YX |
1967 | 327 | m/t | - | 220 | 4 | K-10 to 25 |
| ZA |
1965 | 327 | m/t | - | 275 | 4 | Nova |
| ZA |
1969 | 350 | m/t, A.I.R. | - | 255 | 4 | C-10, 20, 30 |
| ZAA |
1979 | 350 | m/t, L48 | 8 | 195 | 4 | Vette |
| ZAA |
1992 | 350 | ZR1, ohc, 32v, m/t | J LT5 | 375 | MPFI | Vette |
| ZAB |
1979 | 350 | a/t, L48, fed. | 8 | 195 | 4 | Vette |
| ZAC |
1979 | 350 | L48, Calif | 8 | 195 | 4 | Vette |
| ZAC |
1992 | 350 | rev cooling, a/t | LT1 P | 300 | TPI | Vette |
| ZAD |
1979 | 350 | L48, high altitude | 8 | 195 | 4 | Vette |
| ZAK |
1980 | 350 | a/t, L48 | 8 | 190 | 4 | Vette |
| ZAM |
1980 | 350 | m/t, L48 | 8 | 190 | 4 | Vette |
| ZB |
1965 | 327 | m/t, high perf. | - | 300 | 4 | Chevy II |
| ZB |
1966 | 327 | m/t, hi perf. A.I.R. | - | 300 | 4 | Chevy II |
| ZB |
1969 | 350 | m/t | - | 255 | 4 | C-20 |
| ZBA |
1979 | 350 | m/t, L82 | 4 | 225 | 4 | Vette |
| ZBA |
1982 | 350 | Cross-fire inject | L83 8 | 200 | TTBI | Vette |
| ZBB |
1979 | 350 | a/t, L82 | 4 | 225 | 4 | Vette |
| ZBC |
1980 | 350 | a/t, L82 | 6 | 230 | 4 | Vette |
| ZBC |
1982 | 350 | Cross-fire inject | L83 8 | 200 | TTBI | Vette |
| ZBD |
1980 | 350 | m/t, L82 | 6 | 230 | 4 | Vette |
| ZC |
1966 | 327 | A.I.R., a/c | - | - | - | Chevy II |
| ZC |
1969 | 350 | m/t | | 255 | 4 | C-20 & 30 |
| ZCA |
1980 | 305 | a/t, LG4 | H | 180 | 4 | Vette |
| ZD |
1966 | 327 | Powerglide, A.I.R. | | 275 | 4 | Chevy II |
| ZD |
1969 | 350 | Powerglide | | 255 | 4 | C-10 |
| ZDA |
1981 | 350 | M/t | L81 6 | 190 | 4 | Vette |
| ZDB |
1981 | 350 | a/t | L81 6 | 190 | 4 | Vette |
| ZDC |
1981 | 350 | m/t | L81 6 | 190 | 4 | Vette |
| ZDD |
1981 | 350 | m/t | L81 6 | 190 | 4 | Vette |
| ZDF |
1985 | 350 | Tuned port inj, a/t | L98 8 | 230 | TPI | Vette |
| ZE |
1965 | 327 | man trans., a/c | - | - | - | Chevy II |
| ZE |
1969 | 350 | m/t | - | 255 | 4 | C-20 |
| ZF |
1965 | 327 | m/t, a/c, hi perf. | - | 300 | 4 | Chevy II |
| ZF |
1969 | 350 | turbohydro | - | 255 | 4 | C-10 & 20 |
| ZF |
1969 | 350 | m/t | - | 255 | 4 | K-10 |
| ZFC |
1984 | 350 | Tuned prt inj, a/t | L83 8 | 205 | TPI | Vette |
| ZFD |
1984 | 350 | Tuned prt inj, m/t | L83 8 | 205 | TPI | Vette |
| ZFF |
1984 | 350 | Tuned prt inj, a/t | L83 8 | 205 | TPI | Vette |
| ZFM |
1984 | 350 | Tuned prt inj, m/t | L83 8 | 205 | TPI | Vette |
| ZFN |
1982 | 350 | Tuned prt inj, a/t | L83 8 | 200 | TPI | Vette |
| ZFN |
1984 | 350 | Tuned prt inj, a/t | L83 8 | 205 | TPI | Vette |
| ZG |
1966 | 327 | A.I.R.spec hi perf. | - | 325 | 4 | Chevy II |
| ZG |
1969 | 350 | m/t, 3 spd | - | 255 | 4 | K-10 & 20 |
| ZH |
1966 | 327 | sp hi per, EM, a/c | - | 325 | 4 | Chevy II |
| ZH |
1969 | 350 | m/t, 3 spd | - | 255 | 4 | K-20 |
| ZI |
1966 | 327 | special high perf. | - | 325 | 4 | Chevy II |
| ZJ |
1966 | 327 | spec high perf, a/c | - | 325 | 4 | Chevy II |
| ZJ |
1969 | 350 | turbohydro | - | 255 | 4 | K-10 & 20 |
| ZJB |
1985 | 350 | Tuned prt inj,m/t | L98 8 | 230 | TPI | Vette |
| ZJC |
1985 | 350 | Tuned prt inj,exp | L98 8 | 230 | TPI | Vette |
| ZJH |
1986 | 350 | a/t, alum heads | L98 8 | 235 | TPI | Vette |
| ZJJ |
1985 | 350 | Tuned prt inj, a/t | L98 8 | 230 | TPI | Vette |
| ZJK |
1985 | 350 | Tuned prt inj, m/t | L98 8 | 230 | TPI | Vette |
| ZJN |
1987 | 350 | a/t, alum heads | L98 8 | 240 | TPI | Vette |
| ZJR |
1987 | 350 | m/t, alum heads | L98 8 | 240 | TPI | Vette |
| ZJS |
1986 | 350 | a/t, alhds, oil cool | L98 8 | 235 | TPI | Vette |
| ZJW |
1986 | 350 | M/t, alhds, oil cool | L98 8 | 235 | TPI | Vette |
| ZK |
1965 | 327 | Powerglide | | 275 | 4 | Chevy II |
| ZKA |
1986 | 350 | m/t, alum heads | L98 8 | 235 | TPI | Vette |
| ZKD |
1986 | 350 | a/t, alum heads | L98 8 | 235 | TPI | Vette |
| ZL |
1965 | 327 | Pwerglide, hi perf. | - | 300 | 4 | Chevy II |
| ZLA |
1987 | 350 | a/t, alhds, oil cool | L98 8 | 240 | TPI | Vette |
| ZLB |
1987 | 350 | export, al. heads | L98 8 | 240 | TPI | Vette |
| ZLC |
1987 | 350 | m/t, alhds, oil cool | L98 8 | 240 | TPI | Vette |
| ZM |
1965 | 327 | Powerglide, a/c | | 275 | 4 | Chevy II |
| ZMA |
1988 | 350 | a/t, alum heads | L98 8 | 240 | TPI | Vette |
| ZMC |
1988 | 350 | a/t, alhds, oil cool | L98 8 | 240 | TPI | Vette |
| ZMD |
1988 | 350 | m/t, alhds, oil cool | L98 8 | 240 | TPI | Vette |
| ZN |
1965 | 327 | glide, a/c, hi perf. | - | 300 | 4 | Chevy II |
| ZO |
1968 | 307 | M/t | - | 200 | 2 | C-10 |
| ZP |
1968 | 307 | M/t | - | 200 | 2 | K-10 & 20 |
| ZQ |
1968 | 307 | M/t | - | 200 | 4 | K-20 |
| ZRA |
1989 | 350 | m/t, alhds, oil cool | L98 8 | 240 | TPI | Vette |
| ZRB |
1989 | 350 | a/t, alum heads | L98 8 | 240 | TPI | Vette |
| ZRC |
1989 | 350 | a/t, alhds, oil cool | L98 8 | 240 | TPI | Vette |
| ZRJ |
1990 | 350 | ZR1, ohc, 32v, m/t | J LT5 | 380 | MPFI | Vette |
| ZS |
1968 | 307 | M/t | | 200 | 2 | C-20 |
| ZSA |
1990 | 350 | a/t, alum heads | L98 8 | 250 | TPI | Vette |
| ZSB |
1990 | 350 | m/t, alum heads | L98 8 | 250 | TPI | Vette |
| ZSC |
1990 | 350 | a/t, alhds, oil cool | L98 8 | 250 | TPI | Vette |
| ZTA |
1991 | 350 | a/t, alum heads | L98 8 | 245 | TPI | Vette |
| ZTB |
1991 | 350 | m/t, alhds, oil cool | L98 8 | 245 | TPI | Vette |
| ZTC |
1991 | 350 | a/t, alhds, oil cool | L98 8 | 245 | TPI | Vette |
| ZTD |
1991 | 350 | ZR1, ohc, 32v, m/t | J LT5 | 375 | MPFI | Vette |
| ZTH |
1991 | 350 | ZR1, ohc, 32v, m/t | J LT5 | 375 | MPFI | Vette |
| ZTJ |
1991 | 350 | ZR1, ohc, 32v, m/t | J LT5 | 375 | MPFI | Vette |
| ZTK |
1991 | 350 | ZR1, ohc, 32v, m/t | J LT5 | 375 | MPFI | Vette |
| ZUA |
1992 | 350 | rev cooling, a/t | LT1 P | 300 | TPI | Vette |
| ZUB |
1992 | 350 | rev cooling, m/t | LT1 P | 300 | TPI | Vette |
| ZVA |
1993 | 350 | rev cooling, a/t | LT1 P | 300 | TPI | Vette |
| ZVB |
1993 | 350 | rev cooling, m/t | LT1 P | 300 | TPI | Vette |
| ZVC |
1993 | 350 | ZR1, ohc, 32v, m/t | J LT5 | 375 | MPFI | Vette |
| ZX |
1968 | 307 | m/t, 3 spd | | 200 | 2 | K-10 & 20 |
| ZY |
1968 | 307 | m/t, 3 spd | | 200 | 2 | K-20 |
|