HEAVY DUTY TRUCK TRANSMISSION IDENTIFICATION 4 SPEED SYNCHRO MESH CHEVROLET 5 PEED SYNCHRO MESH SPICER Identification stamped on right rear face of case Identification marked on rear face of case at bottom 1955 1962 1956 1968 PI t Prefix I EXAMPLE DA14 0 Muncie M D A 14 0 Saginaw S Manufacturer Month Day Year Dana january 14th 1960 1963 68 On 19 60 1966 vehicles with a Transmission code on the vehicle identification plate the following codes are used for Spicer Muncie N Transmissions Saginaw R EXAMPLE N507N Cede N 5 07 N S Speed Spicer S3152 I Plant Month Day Shift 5 Speed Close ratio Spicer S 3152A Muncie May Seventh Night 5 Speed Overdrive ratio Spicer S3153 On 1960 1962 vehicles with a Transmission code on the vehicle S Speed H D Spicer 1963 65 only S5652B identification plate the code for 4 Speed Transmission is C4 5 pei d I LD Close ratio Spicer 1963 65 only S5756B On 1963 1966 vehicles with a Transmission code on the GVW 5 Speed Spicer 55752 plate the code for 4 Speed Transmission with 292 Cu In 5 Speed Spicer S5752C Engine is C4 the code for 4 Speed Transmission with 327 Cu ln Engine is SC4 4 SPEED SYNCHRO MESH NEW PROCESS 5 SPEED SYNCHRO MESH CLARK Identification stamped on tag retained by two rear Power Identification marked on rear face of case at bottom Take off screws A 196568 1959 1968 EXAMPLE CA20 EXAMPLE NP435 2 16 5 C A 2 0 Cl 3850382 Manufacturer Month Day Year 4 Spd Ident Part No Clark I january 2nd 1960 New Process Feb 16 1965 Model Chevrolet On 1960 1964 vehicles with a Transmission code on the vehicle NP435 I 2 16 S CI 3850382 identification plate the following codes are used for Clark Transmissions Code HYDRAMATIC 5 Speed Clark CL265V X Identification stamped on tag located on left rear face of case 5 Speed Close ratio Clark CL267V Series number begins with 1001 err each type transmission 5 speed Overdrive ratio Clark CL267VO On 1965 66 vehicles the following codes are used for Clark 1955 1957 Transmissions Series Model Code Series Medel Prefix Std Ratio 2653V l 4000 200 55 CHC 55 C1ose Ratio 2622v 267V 269V Overdrive 264VO 1958 Series I Series Model Prefix I 4000 6 cyl 20055 ci rc 55 PEE T M T 4000 8 cyl 310 A CHE 57 POWERMATIC 1959 X Series Identification plate on rear left side of case Also included is Series Model Prefix date of manufacture EXAMPLE 425 April 25 4000 6 cyl 200 CHC 58 4000 8 cyl 310 CHE 58 1956 T0 JANUARY 1957 Series Model Color Plate S r r Mer i ig E T i i j 3 i r 1 y i 5 i j 5 1 ii 13 ST NEW PR ESS FEBRUARY 1957 1956 1968 Series Engine Model Color Plote Identification marked on rear face of case at bottom 5 261 MT25C2 Red Ne Prefii eie iy 5 6 7 80 00 265 Mrzsc Yellow EXAMPLE 3279 6 7 g 00 283 MT25C Yellow 3 27 9 9 10000 222 MT30c Green Month Day Year March 27th 1959 1953 r On 1963 1966 vehicles with a Transmission code on the GVW series Enging Mqdgl Color Plrrtc plate the code for 5 Speed New Process is NP 6gg 261 M 25 j 2 Red M de1 C l 5 6 7 8000 283 MT25C Yellow Std Ratio 540C 540GL 541GL 9 10000 322 348 MT3 Green Close Ratio 540GD t GM PARTS DIVISION GENERAL MOTORS CORP RAT ON CHEVROLET 72TM 61