Engine Codes & Production Figures
Find here some figures that I found over the years, taken from different sources, I found they are pretty accurate. SCROLL DOWN !
1ST PHOTO PLACES WHERE CODES ARE USUALLY FOUND IN A 400-455 ENGINES…. 2ND PHOTO 403-455 OLDS ENGINES
(1)400 engine
(2)403 engine
1967 ENGINE CODES Pontiac 400: WI, WQ, WU, WZ (manual), YT, XN (automatic) |
1968 ENGINE CODES Pontiac 400: WZ (manual), YT (automatic) Pontiac 400 HO: WQ (Manual), YW (automatic) Pontiac 400 Ram Air: XN, XT (automatic), WU, WI (manual) |
1969 ENGINE CODES Pontiac 400: WZ (manual), YT (automatic) Pontiac 400 Ram Air III: WQ (manual), YW (automatic) Pontiac 400 Ram Air IV: WH (manual), XN (automatic)
1969 TRANS AM PRODUCTION BREAKDOWN:
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1970 ENGINE CODES Pontiac 400: WK, WS, WT (manual), XX, YS, YX (automatic) Pontiac 455: WC, WJ, WL (HO) (manual), YC, YE (HO) (automatic)
1970 TRANS AM PRODUCTION BREAKDOWN:
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1971 ENGINE CODES Pontiac 400: WK, WS, WT (manual), XX, YS, YX (automatic) Pontiac 455: WC, WJ, WL (manual), YC, YE (automatic) 1971 TRANS AM PRODUCTION BREAKDOWN:
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1972 ENGINE CODES Pontiac 400: WK (manual), YS, YX, ZS, ZX (automatic) Pontiac 455: WD, WM (manual), YB, YE (automatic) 1972 TRANS AM PRODUCTION BREAKDOWN::
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1973 ENGINE CODES Pontiac 400: WK, WP, WS, Y6, YG (manual), Y3, XN, YS, YX, YZ, ZK, ZX (automatic) Pontiac 455: WT, WW, ZZ (manual), YA, YC, YD, YK (automatic) Pontiac 455 SD: W8 (manual), Y8 , XD (automatic) 1973 TRANS AM PRODUCTION BREAKDOWN:
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1974 ENGINE CODES Pontiac 400: WT, Y3 (manual), AD, AH, AT, YT, YZ, YF, YH, ZJ, ZK, YL, YM, A3, YT, AT, ZS, ZT (automatic) Pontiac 455: AU, YW, YY (automatic) Pontiac 455 SD: W8 (manual), Y8 (automatic) 1974 TRANS AM PRODUCTION BREAKDOWN:
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1975 ENGINE CODES Pontiac 400: WT (manual), YS (automatic) Pontiac 455: WZ (manual) 1975 TRANS AM PRODUCTION BREAKDOWN:
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1976 ENGINE CODES Pontiac 400: Y9, YS, YZ, ZK, Y9 (automatic) WU, WT (manual) Pontiac 455: WX 1976 TRANS AM PRODUCTION BREAKDOWN:
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1977 ENGINE CODES L78 Pontiac 400: XA W72 Pontiac 400: Y6, YG (automatic) WA (manual) Olds 403: VA, VB, U2, U3 1977 TRANS AM PRODUCTION BREAKDOWN:
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1978 ENGINE CODES L78 Pontiac 400: YA, YU W72 Pontiac 400: X7, WC Olds 403: VA, VB, U2, U3 1978 TRANS AM PRODUCTION BREAKDOWN:
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1979 W72 Pontiac 400: PWH (manual only) Olds 403: Q6, QE, QJ, QK, QL Pontiac 301: X4, X6
1979 TRANS AM PRODUCTION BREAKDOWN:
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1980 Pontiac 301: XC, XM, XN, YN Pontiac 301 Turbo: YL Chevy 305: CEL, CEM 1980 TRANS AM PRODUCTION BREAKDOWN:
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1981 Pontiac 301: BD, BJ Pontiac 301 Turbo: BO, CJ Chevy 305: D6A, D6B, D6D, DHA, DHB, DHC, DHD, DHF, DHH, DHJ, DHK, DHU, DHZDJ, DKB, DND 1981 TRANS AM PRODUCTION BREAKDOWN:
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Thanks to 78ta for THE ABOVE info
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