V9 fZ1JRVETi E FNGSNE SERIES NUMBER AND SUFFIX CHART Cont I 1968 427 8 CYLINDER Type Type Description Designation Description Designation High Performance IL Special High Performance Tri Carb IR High Performance and Tri Carb IM Heavy Duty IT High Performance Tri Carb and 3S o ccd Special High Performance Tri Carb Automatic Trans IO and Aluminum Heads IU 3 Specd Automatic Trans I IO 1969 350 B CYLINDER High Performance r A HW Manual Trans HY High Performance C A C HX 3Sp22d Automatic Trans IZH 400 HZ 427 8 CYLINDER High Performance 35 eed Tri Carb Special High Performance Automatic Trans T H 400 LL Heavy Duty Clutch 2 LT High Performance LM Aluminum Heads Heavy Duty Clutch LU Tri Carb High Performance Bspeed Heavy Duty 3 Soeed Automatic Automatic Trans T H 400 LN Trans T H 400 I LV Heavy Duty LO Aluminum Heads 3 S eed Automatic Aluminum Heads LP Trans T H 400 LW Tri Carb High Performance LO Tri Carb Special High Performance Tri Carb 5peciaI High Performance I LR 3Speed Automatic Trans T H 400 LX 1970 350 8 CYLINDER i Manual Trans CTL High Performance Trans or Ignition C A C CTO 3Speed Automatic T H 400 CTM Special High Performance CTR High Performance i CTN Special High Performance Transistor Ignition CTU High Performance C A C CTO Special High Performance Transistor Ignition High Performance Transistor Ignition r CTP 4 Speed CTV 454 8 CYLINDER High Performance 4 BBL 3 peed 4 BBL Heavy Duty 3 S eed Automatic Automatic T H 400 CGW T H 400 CZN High Performance 4 BBL CZU High Performance 4 BBL Transistor 4 8BL Heavy Duty CZL Ingition CRI WAREHOU lN AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPCRATION CHEVROLET 14A REV 12 83 is A I 4 i