How to detirmine what tranny you have

[Justin Fleming]

I went to the auto parts store and tried to get a new filter for my 86 k5 and eveything they brought out was different then what I hand in my hand. So I assume this is not the original tranny for this truck. So how do I determine what I have? It is a 4 speed auto I assumed it was the 700r4.... It has 16 bolts that hold the pan on........Any help would be appriciated....


thanks

 

[sandawgk5]

Compare the shape of your tranny pan to the pictures here.

Ira

 

[Muddytazz]

Here is a link to a site of different transmission pan shapes to determine what tranny you have.

http://www.transmissioncenter.net/PanShapes.htm

 

[Justin Fleming]

I just found this on the web......So I am certian it is part of the 700r4 family, but I guess someone must have swapped it out to the 4l60e.....Are these ones still A pos? What do you think about my symptoms??


today when I took it out the trans did not seem to want to shift out of 1st gear. I really had to wind it up very high before it would shift. Other wise when I wind it up really high and then let off it still does not shift, but it seems to go into like a stall and when I gen back into the gas it revs then engauges into 1st.....any ideas?

It does shift out of 1st if I tack it out and then it goes into second....

seems like something is sticking or something

 

[Muddytazz]

Governor?

Oh, and the 4l60e is an electronically controlled tranny, the 4l60 is non-electronically controlled

 

[Justin Fleming]

Governor?

Oh, and the 4l60e is an electronically controlled tranny, the 4l60 is non-electronically controlled

what should I expect if I was to drop the valve body......Will there be a bunch of check balls and springs?

I think it is the 4l60e becasue there is like 4 electronic looking solenoids that I can see when the pan is off...

Does anyone have a diagram for he 4l60e internals??

thanks in Advacnce

 

[dave_90_blazer]

what should I expect if I was to drop the valve body......Will there be a bunch of check balls and springs?

I think it is the 4l60e becasue there is like 4 electronic looking solenoids that I can see when the pan is off...

Does anyone have a diagram for he 4l60e internals??

thanks in Advacnce

is there a cable going from near where the dipstick tube goes into the trans up to the carb/TBI ?
is there a white 4 pin electrical connector on the drivers side of the trans case?

if yes, it is a 700R4

 

[sandawgk5]

Some of the later 700r4s had the switches on the valve body all they really did was sense fluid pressure not sure of there purpose though.

Ira

 

[dave_90_blazer]

one is for the ECM to sense 4th gear(OD), others are involved with OD

 

[lamberthkp]

mid 80's gm changed the shape of the filter so that might be it , i think 86still had the old style

 

[dave_90_blazer]

mid 80's gm changed the shape of the filter so that might be it , i think 86still had the old style

agreed