Can anyone decode the following 700R4 code number? I would like to know if I have the year correct and that it is a 700R4 transmission, what make and model vehicle it came from along with what engine it was pared with? Serial # 9TUM265B on passenger side bottom rear of the case. # 0n white tag/sticker left side of bell housing 9TUM. Bar code # on white sticker: 619TUM0D2341815. I believe the 9 stands for 1989 and the M stands for 700R4.
9TUM265B 9 is YOM, TU is OEM model it was installed in at factory, M is 4L60, 265 is Julian date of year, B is manufacturing shift. I've no idea what model 'TU' is, hopefully someone else is far more knowledgeable.
The 4L60 and the 700R4 are basically the same tranny. The only thing you need to concern yourself with is: Does it have a 30 spline input shaft Does it have an "MD8" or a "K" case Anything else isn't worth messin' with.
Most junk yards have the Hollander cross over and ID codes book, you can get all the info you need on everything in a car.
i am going out today to look at a trans and was wondering where on the case i would find the "MD8 or the K"? any help before i get there would be great. thanks scott.
ok i didnt ever get the call back on the trans i was going to look at yesterday but just recieved a call on another one this morning. the guy says its out of a 91 gmc, has the MD8 on the case and has 27 splines unless he counted wrong. i was under the impression they were 30 spline after '87 i think. he is suppose to send pictures directly and i want to know if being 27 spline acceptable or should i pass? i dont want to make a 2 1/2 hour (one way) dry run. thanks in advanse Scott ok just talked to him again, the first number in the code is a 6 so i guess its an '86 and has 27 spline. it is an MD8 case. i now it wouldnt be the first choice but is it good enough for a driver?
NO! You do not want a 27 spline 700R4. Everything inside a 27 spline is weak! I would double check the spline count. I have never seen a 27 spline in an MD8 case. I'm not saying it wasn't done, I'm just saying that I haven't seen one.
ok thank you thats what i thought. the price was right but when he told me help the spline count (he counted a second time while i was on the phone) the red flag whent up. i apriciate all the help, i sure dont want to spend $ on something i will regret. thank you scott
The Jalopy Journal
