Bobbo3234 said:
Looking for a higher stall torque converter and they said to check if mine is a lock up or non lock up transmission. Its a 700r4, not sure what the original vehicle is.
this may help to identify.....
Transmission code is located on the right rear oil pan rail and includes the year, model, Julian build date and shift built.
Example:9YPMYXXXXXXXXX267A
9 Model Year (1989)
YP 305 CID Application
M Transmission Type (THM 700-R4)
Y Build Location (Toledo)
267 Julian Date
a = Shift Built (1st)
Cid code
FK 350
FX 350
YP 305
YW 305
YX 173
YZ 305
Build Date Code
Starts with the Julian date (day of the year) on which 1989 production started. The build date code continues with the Julian date until December 31 (365). The sequence then continues until the end of the 1989 production. EXAMPLE: January 20, 1989 would translate to a build date code of 385.
Shift Code
Code Shift
A & B First shift
C & H Second shift
D Day
N Night
Note:
In addition to the transmission production code number, all passenger cars have a portion of the vehicle identification number stamped on the transmission. The condensed vehicle identification number consists of the division identification number, model year, assembly plant designation and vehicle build sequence number.
this does'nt mean that the trans is still in original configuration but it will help find out where it originated from.
also, if you could post a pic of the valve body i might be able to identify if it's been converted to a 4th gear lockup.
