CORVETTE REAR AXLE IDENTIFICATION Axle Identification is stamped on differential carrier alone with date oi manufacture Plant Plant Type Identification Type Identification 1955 58 3 paed or 4 speed w Mmnae arms 3 70 ratio 4 FJ 3 Speed 4 4 4 4 AH 3SPeed or 4 peed wIPositractlon ond Powerglide 4 4 4 4 AE Metallic Brakes 3 70 ratio 4 4 FK 3Speed w 3 27 ratio 4 AD 3Speed or 4Speed vv Positraetion and 3 Spee l w 4 11 ratio 4 44 4 AJ Metallic Brakes 4 11 ratio 4 FL 3 Speed w Posltraction 3 70 ratio 4 AN 3 S eed or Aspeed w Posltractlon and 3 Speed w Positraction 4 11 ratlo 4 4 4 AP Metallic Brakes 4 56 ratlo 4 FM 3Speed w Positractlon 4 56 ratio 4 4 4 AO Heavy Duty Brake Suspension w Positraetlon 3 70 ratio 4 4 AS Heavy new arake Suspension 1961 w Positrsction 4 11 ratio 4 AT Heavy Duty Brake Suspension w Posltraction 4 56 ratio 44 AU 3 oeed 3 36 ratio 4 44 AC Powarollde 3 55 ratio 44 4 4 AE 4Speed 3 70 Ratio 4 44 4 AH Fositraation 3 70 ratio 4 4 A AN Posltraction 4411 ratio AP I959 V Positraotion 4456 ratio 4 4 4 AO I Poeitraction 3 36 ratio 4 4 4 AF Poxitractlon w H4D Brake Sum4 3 70 ratio 4 4 AS 3Speed or 4 Speed AH Positractlon w H D Brake Susil Powerglide 4 4 4 AE 4 11 ratio 4 4 AT 3 or 4 Speed w Posltractlon 3 70 ratlo 4 AN Posltraetion w H D Brake Susp 3 or 4 Speed w Posltractlon 4 11 ratlol 44 AP 4 56 ratio 4 4 4 4 4 AU 3 or 4 Speed w Posltractlon 4 56 ratio 4 4 AO Metallic Brakes 3 70 ratio 4 FJ 3 or 4 Speed w H D Brake Sutp and Ponitraetion w Metallic Brakes Poxltraetion 3 70 ratlo 4 4 4 AS 3 70 ratio 4 2 4 4 FK 3 or 4 Speed w H D BrakdSusp and Posioraction w Metallic Brakes Positractlon 4 1 ratio 4 4 AT 441 retio 4 4 4 44 FL 3 or 4 Speed w H4D Brake Suep and Positractlon w Metallic Brakes Posltraction 4 56 ratio 4 44 4 AV 4 56 ratio 44 4 4 4 FM 3 or 4 Speed w Metallic Brakes 4 4 FJ 3 or 4 Speed w Positraction and Metallic Brakes 3 70 ratio 4 FK 2 or 4 speee w Posltraction and Metallic 1962 Brakes 4 11 ratio 4 4 4 4 FL 3 or 4 Speed w Poaitraction and Metallic 41 Brakes 4 56 ratio 4 FM 3 Peed 3 36 ratio 4 4 CA Positraction 3 36 ratio 4 4 CB Pouitraction 3 55 ratio 4 4 4 CC Positraetlon 3 70 ratlo 4 4 4 4 CD J Posltraotion 4 11 ratio 4 44 CE 1960 Foaitractlon 4 56 ratio I 4 4 CF 4 Speed 4 4 4 CG w Metallic Brakes 3436 retio 4 4 CH w Metallic Brakes 3 55 ratio 4 4 CJ 3Speed or 4 paed 3 70 ratlo AH Fositractionwv Metallic Brakes Powerglide 3 55 ratio 44 4 AE 3 36 ratlo CK Posltrection 3 70 ratio 4 4 44 AN Posltractlon w Metallic Brakes Posltraction 4 I1 ratio 4 4 AP 3 55 ratlo 4 44 44 CL Posltraction 4 56 ratio AO Posltraction w Metallic Brakes 3Soeed or 4 Speed w H D Brake Susp 3 70 ratio Z 4 CM and Positraction 3 70 ratio 4 44 AS Positraotion w Metallic Brakes 3Speed or 4 Speed w H D Brake Susp 4 1 I ratio 4 444 4 4 CN and Posltraction 4 11 ratlo 4 44 AT Poeitraction w Metallic Brakes 3Speed or 4Speed w H D Brake Susp 4 56 ratio 4 4 CF and Positractlon 4 56 ratio 4 AU Potitraetlon w H D Brake Suse 4 CO V GM PARTS DIVISION GENERAL MOTORS CORPORAT 0N CHEVF 0LETv14 26