CORVETTE ENGINE SERIES NUMBER AND SUFFIX CHART Cont VB M I9t i5 39G 8 CYLINDER Tvzw Tvnc Description Dnimation Description Designation Spec High Performance ZF Note Engines are stamped with a source production date and type on serial pad IQEG l 377 E CYLINDER Manual Trans HE Powerqlide i HO A I R I I HH 2 Special High Performance HT A l R and Powerglide HR Prmer Steering I HP Special High Performance and A I R HD Special High Performance CALC ard A I 2 KH 427 8 CYLINDER Special High Performance Hyd Liftersl IK Special High Performance i IP High Performance IL Powerglide ICI A l R IM Powerglide and A I FI r IFI Type Designations or some engines will be followed by an R Rochester or H Holly Carter to designate Carburetor requirements 1967 327 8 CYLINDER Manual Trans HE Powerglide HO A l R i i HH Special High Performance HT A FI and Powerglide HR Power Steering S eciaI High Performance and C A C HP Special High Performance and A l R HD Special High Performance C A t and A l R KH 427 8 CYLINDER 4 Speed or Fowerglide IL A l R and Aluminum Heads JH Tri Carb JC Powerglide ID Special High Performance and Tri Carb JE Powarglide and Tri Carb JD Heavy Duty IT A I R and Powerglide IR Aluminum Heads IU A I FI Powerglide and Tri Carb JG A I R IM A l R Special Hiya Performance and A l l I end Tri Carb JF Tri Carb JA 1968 327 8 CYLINDER Manual Trans HE Hyd Steering and C A C HP 3 eed Automatic Trans HO Special High Performance HT WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHEVFIOLET l4A 12 REV 12 83 A 1 3