The engine code is located on the front of the block, just in front of the #2 cylinder. The list below covers different models but not all are included.
Year |
Engine |
HP | Engine Code (Automatic) | Engine Code (Manual) |
1964 | 326 cid | 250 | 92J | 92X,92W |
1964 | 326 cid | 280 | 94J | 94X,94W |
1964 | 389 cid | 325 | 79J | 78X,78W,789 |
1964 | 389 cid | 348 | 77J | 76X,76W,769 |
1965 | 326 cid | 250 | ZN | WP |
1965 | 326 cid | 285 | YP | WR |
1965 | 389 cid | 335 | YS | WT |
1965 | 389 cid | 360 | YR | WS |
1966 | 326 cid | 250 | XF,YN | WX,WP |
1966 | 326 cid | 285 | XG,YP | WR |
1966 | 389 cid | 335 | YS,XE | WT,WW |
1966 | 389 cid | 360 | YR | WS,WV,XS |
1967 | 326 cid | 250 | YO,YN,XF,YJ,XI | WP,WX,WC,WH |
1967 | 326 cid | 285 | YP,XG,YM,XO | WR,XR,WK,WD |
1967 | 400 cid | 255 | XL,XM | NONE |
1967 | 400 cid | 335 | YS | WT,WW |
1967 | 400 cid | 360 HO | YZ | WS,WV |
1967 | 400 cid | 360 RA | XP | XS,YR |
1968 | 350 cid | 265 | YN,YJ | WD,WC |
1968 | 350 cid | 320 | YP,YM | WR,WK |
1968 | 400 cid | 265 | XM,YA | NONE |
1968 | 400 cid | 350 | YS,XH | WT,XZ |
1968 | 400 cid | 360 HO | YZ | WS |
1968 | 400 cid | 360 RA | XP | XS |
1968 | 400 cid | 360 RA II | XW | WY |
1969 | 350 cid | 265 | XL,YJ,XR,YN,XB,YE,UY,XS | WC,WP,WM,WU |
1969 | 350 cid | 330 | XT,XU,YP | WR,WV |
1969 | 400 cid | 265 | XM,YZ,XX,YB,YF | NONE |
1969 | 400 cid | 350 | YS,XH | WT,WX |
1969 | 400 cid | 366 RA III | NONE | WS,YZ |
1969 | 400 cid | 370 RA IV | NONE | WW,XP |
1970 | 350 cid | 255 | X7,YU | W7,WU |
1970 | 400 cid | 265 | XX,YB | NONE |
1970 | 400 cid | 330 | XZ,XV | NONE |
1970 | 400 cid | 350 | XH,YS | WX,WT |
1970 | 400 cid | 366 RA III | NONE | WS,YZ |
1970 | 400 cid | 370 RA IV | XP | WW |
1970 | 455 cid | 360 | TC,YH | WA |
1971 | 350 cid | 250 | XR,YU,YN,YP | WR,WU,WN,WP |
1971 | 400 cid | 265 | XX,YX | NONE |
1971 | 400 cid | 300 | YS | WK,WT |
1971 | 455 cid | 325 | YC | NONE |
1971 | 455 cid | 335 HO | YE | WL,WC |
1972 | 350 cid | 160,175 | YU,YV,YR | WR |
1972 | 400 cid | 200 | ZV,ZX | NONE |
1972 | 400 cid | 250 | YS,YT,ZS | WK,WS |
1972 | 455 cid | 220 | YA,YC,Y4 | NONE |
1972 | 455 cid | 250 | YD,YK | NONE |
1972 | 455 cid | 300 HO | YB,YE | WD,WM |
1973 | 350 cid | 150,175 | Y2,Y7,YR,YV,ZR,ZV,WA,WC,WD,WF,WL,WN,XZ | XR,WV,ZB,ZD |
1973 | 400 cid | 170,185 | YI,YP,YX,YZ,Y4,ZK,ZX,XH,XI,X3,X4 | NONE |
1973 | 400 cid | 200,230 | YN,YX,YT,Y3,ZN,ZS,XK,XN,XX,XZ,X5 | WK,WS,WP,YF,Y6,YG |
1973 | 455 cid | 215,250 | YA,YC,YD,YK,ZA,AC,XA,XE,XJ,XL,XY,XT,X7,XO,YE | NONE |
1974 | 350 cid | 155,170 | AA,YA,YB,YC,ZB,YN,YP,YS,ZA | WA,WB |
1974 | 350 cid | 170,185,200 | YN,YP,YS,ZP | WN,WP |
1974 | 400 cid | 175,190 | AH,YH,YJ,ZH,ZJ,AD,YF,YK,ZD,ZK | NONE |
1974 | 400 cid | 200,225 | AD,YL,YM,ZS,AT,YT,YZ,ZT | WT,WR,Y3 |
1974 | 455 cid | 215,250 | AU,YR,YU,YW,YX,YY,ZU,ZW,ZX,A4,Y4,Y6,Y9,Z4,Z6 | NONE
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