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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 |  
 
  
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