x g CORVETTE ENGINE SERIES NUMBER AND SUFFIX CHART Cont V8 I I A 1955 I 7 I I 39E B CYLINDER I I g Tv I Tviw P Descriptiun I I Designation Descriprinn I Designation spec High Performance I IF I I Nora Engines are stamped with a source production dau and type cn serial pad I g U was I I I I 327 T B CYLINDER I Manual Trans I HE I Powerglide I l HO I A l R I 4 I HH Special High Performance 4 I HT A lIR an Pcwerglide A HF Power Sxeering I Q HF I I SpeciaIIHigh Performance and A I R I HD Special High Performance CIAIC and A Fl I KH I I I I 427 B CYLINDER I I I Special High Performance fHydJ Liftursl IK Special High Performance I r I IP I I High Performance I I IL Puwerglide I I r IO I A IIR I I I I I IM Fowerglide and A l R I I I IR Type Designations far some engines will be followed by an R Rochester or H Holly Carxurl to designare Carburetor requirements I I I I I 1967 I I 327 8 CYLINDER I I I Manual Trnus I I I HE Pcwerglide I I I I HO I I A I FiI I I J HH Special High Performance I HT I A l FI and Powerglide I I I L I I HR Power Steerlng SpeciaI High Performance and C A C HP Special High Perlormance and A l R HD ISpecial High Performance C A CI and A l R I l H x I I I I I 427 8 CYLINDER I I 4 S eed cr Pnwerglide I I IL I A l R and Aluminum Heads I I I I JH Tri Carb I I I I JC Powcrglide I I I IO I Special High Performance and TriI Carb I JE Puwerglide and Tri Carb I I I I JD I Heavy Duty I I IT A l R and Powergllde I I IR Aluminum Heads I I IU A l R Powerglide and Tri Carl I I JG A R I I I I 1 I IM A lIR Special High Performance and I 1 A I RI and Tri Carb I I I JF Tri Carb I I I JA I I l I I 1968 327 8 CYLINDER I Manual Trans I I I I I HE Hyd Sleering and C A C I I I I HP 3Speed Automatic Trans I HD Special High Performance I I I II I HT I I WAREHCIUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CI lEVROLET l4A 12 I g I g REV 12 83 I I A 1 3 I I V I I v Ji I