CORVETTE REAR AXLE IDENTIFICATION Cont Plant Plant Type Identification Type Identification 1963 Positraction 4 11 ratio AP 3Speed 3 36 ratio CA 4 Speed 3 70 ratio AS Positraction 3 08 ratio CJ Positraction 3 08 ratio 427 AT Positraction 3 36 ratio CB Positraction 3 36 ratio 427 AU Positraction 3 55 ratio CC Positraction 3 55 ratio 427 AZ Positraction 3 70 ratio CD Positraction 3 70 ratio 427 FA Positraction 4 11 ratio CE Positraction 4 11 ratio 427 FB Positraction 4 56 ratio CF Positraction 4 56 ratio FC 4Speed 3 08 ratio CZ 4Speed 3 70 ratio cx 1968 3 36 ratio AK 1964 Positraction 3 08 Ratio AL 3 Speed 3 36 ratio CA Positraction 3 36 ratio AM Positraction 3 08 ratio CJ Positraction 3 55 ratio AN Positraction 3 36 ratio CB Positraction 3 70 ratio AO Positraction 3 55 ratio CC Positraction 4 11 ratio AP Positraction 3 70 ratio CD 3 70 ratio AS Positraction 4 11 ratio CE Positraction 3 08 ratio H D AT Positraction 4 56 ratio CF Positraction 3 36 ratio H D AU 4 Spd 3 08 ratio CZ Positraction 3 08 ratio AV 4 Speed 3 70 ratio CX Positraction 3 08 ratio H D AW 1965 I969 3 36 ratio AK 3 36 ratio AK Positraction 3 08 ratio AL Positraction 3 08 ratio AL Positraction 3 36 ratio AM Positraction 3 36 ratio AM Positraction 3 55 ratio AN Positraction 3 55 ratio AN Positraction 3 70 ratio AO Positraction 3 70 ratio AO Positraction 4 11 ratio AP Positraction 4 11 ratio AP Positraction 4 56 ratio AO 3 70 ratio AS 3 08 ratio AR Positraction 3 08 ratio H D AT 4Speed 3 70 ratio AS Positraction 3 36 ratio H D AU Positraction 3 08 ratio 396 AT Positraction 3 08 ratio AV Positraction 3 36 ratio 396 AU Positraction 3 08 ratio H D AW Positraction 3 55 ratio 396 AZ Positraction 2 73 ratio H D AY Positraction 3 70 ratio FA Positraction 3 55 ratio H D AZ Positraction 4 11 ratio 396 FB Positraction 3 70 ratio H D FA Positraction 4 56 ratio 396 FC Positraction 4 11 ratio H D FB Positraction 4 56 ratio FC 1966 3 36 ratio Ai 1970 Positraction 3 08 ratio AL 3 36 ratio CAK S tr t 3 35 r t l A V Positraction 3 08 ratio cAL F itr t 3 55 r i l AN Positraction 3 36 ratio cmvi tr t 3 70 555 A0 Positraction 3 55 ratio cAN Positraction 4 11 ratio AP positracticn 3 O ratio 35g H Pern Positraction 3 08 ratio AR 4 Spaad Closed Ratio CA0 ASPEGC 3 70 ratio AS Positraction 4 11 ratio CAP Positraction 3 08 ratio 396 AT positraciion 3 70 ratio 350 H peru Positraction 3 36 ratio 396 AU 4 Spggd Ciosed Ratio CAS 5 3 55 r t 395 AZ Positraction 3 08 ratio cAt Posmacuon 3 70 ratio 396H FA Positraction 3 36 ratio CAU S tr 4 1 r t 395 F5 Positraction 3 08 ratio cx xv P S a iP 4 55 at H396 FC Positraction 3 08 ratio 4 Speed Automatic CAW Positraction 2 73 ratio CAY 1967 Positraction 3 36 ratio 4Speed Automatic CAX 3 36 ratio AK Positraction 3 55 ratio CAZ Positraction 3 08 ratio AL Positraction 3 70 ratio CFA Positraction 3 36 ratio AM Positraction 4 11 ratio CFB Positraction 3 55 ratio AN Positraction 4 56 ratio CFC Positraction 3 70 ratio AO Positraction 3 36 ratio CLR NOTE The four digit number following the type designation will designate the calendar month and data produced NOTE Plant designation is to be stamped immeidately following the production date B Buffalo Plant G Gear and Axle Plant and W Warren Plant 1974 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET P A 3OB i I2