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Engine Identification: Notes

Letter suffix of Engine Production Code Number indicates engine displacement, horsepower, and other equipment. This number stamped on a pad just forward of right hand cylinder head as follows:

Engine & Horsepower Suffix Letters
283" 195 HP (Chevy II) PB, PD, PE, PF, PG, PL, PM, PN, PO, PP, PQ, PS, PV
    (Chevelle) DA, DB, DE, DI, DJ, DK
    (Chevrolet) GA, GC, GF, GK, GS, GT
  220 HP (Chevy II) QA, QB, QC, QD, QE, QF
    (Chevelle) DG, DH, DL, DM
    (Chevrolet) GL, GW, GX, GZ
327" 275 HP (Chevy II) ZA, ZB, ZC, ZD, ZE, ZF, ZK, ZM
    (Chevelle) EA, EB, EC, EE
    (Chevrolet) HA, HB, HC, HF
  300 HP (Corvette) HD, HE, HH, HO, HR
  350 HP (Chevy II) ZG, ZH, ZI, ZJ
    (Corvette) HD, HT, HK
396" 325 HP (Chevelle) ED, EH, EK, EM
    (Chevrolet) IA, IB, IC, IG, IN, IV
  360" HP (Chevelle) EF, EJ, EL, EN
427" 390 HP (Chevrolet) IH, II, IJ, IO
    (Corvette) IL, IM
  425 HP (Chevrolet) ID
    (Corvette) IK, IP