HEAVY DUTY TRUCK TRANSMISSION IDENTIFICATION 4 SPEED SYNCHRO MESH CHEVROLET 5 SPEED SYNCHRO MESH SPICER Identification stamped on right rear face of case Identification marked on rear face of case at bottom 1955 1962 1956 1968 Plant Prefix EXAMPLE DA14 0 Muncie M D A 14 0 Saginaw S Manufacturer Month Day Year Dana january 14th 1960 1963 68 On 1960 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 Code N 5 07 N 5 Speed Spicer S3152 Plant Month Day Shift S Speed Close ratio Spicer S31S2A Muncie May Seventh Night 5 Speed Overdrive ratio Spicer S3153 On 1960 1962 vehicles with a Transmission code on the vehicle 5 Speed H D Spicer 1963 65 only S5652B identification plate the code for 4 Speed Transmission is C4 5 Speed l l D Close ratio Spicer 1963 65 only S5756B On 1963 1966 vehicles with a Transmission code on the GVW 5 Speed Spicer S5752 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 In 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 0ff screws 196568 1959 1968 EXAMPLE CA20 EXAMPLE NP435 2 16 5 C A 2 0 CI 3850382 Manufacturer Month Day Year 4 Spd Ident Part No Clark January 2nd 1960 New Process Feb 16 1965 Model Chevrolet On 1960 1964 vehicles with a Transmission code on the vehicle NP435 2 16 5 CI 3850382 identification plate the following codes are used for Clark Transmissions Code HYDRAMATIC 5 Speed Clark r CL26 V Identification stamped on tag located on left rear face of case Speed Close ratio Clark CL267V Series number begins with 1001 on each type transmission 5 Speed Overdrive ratio Clark Cl 267V0 On 1965 66 vehicles the following codes are used for Clark 1955 1957 1 ransmissi0ns Series Model Code Series M de Prefix Std Ratio 2653v 4000 200 55 CHC 55 Close Ratio 2622v 267V 269V Overdrive 264VO 1958 Series Series Model Prefix 4000 6 cyl 20056 cnc ss I EE UT M T C 4000 8 cyl 310 CHE 57 POWERMATIC 1959 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 CI lE 58 1956 TO JANUARY 1957 Series Model Color PI te 5 6 7 8000 CTP 4 Red 9 10000 crp 5 6 NEW PROCESS FEBRUARY 1957 1956 1968 Series Engine Model Color PI te Identification marked on rear face of case at bottom 6000 25 MT25 j2 Red No Prefix Date only 5 5 7 3000 265 MT25C Yellow EXAMPLE 3279 5 6 7 8000 283 MT25C Yellow 3 27 9 9 10000 322 MT30C Green Month Day Year A March 27th 1959 95g On 1963 1966 vehicles with e Trensmissien cede the GVW Series Engine ma Color Plate plete the wie f r 5 Speed New Precess is NP 6000 r 261 MT2SC 2 Red Model Code 5 6 7 8000 283 Mrzsc Yellow Std Ratio 540C 540GL 541GL g 1000 322 348 MTQOC Green Close Ratio 540GD l97O CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 315 83