I bought an 89 blazer 4x4 4.3L v6 2 weeks ago since day one the tranny has been slipping, so from what i learned with everyones help. just replace it i'm guessing it's a 700/r4 but would like someone with more knowledge to confirm that before i go buy the wrong tranny. thanks

 

Its is indeed a 700r4.


Before you go looking for one in a junkyard remember this secret to compare if its a 700 or a 4l60e. If you look on the drivers side of the tranny,you'll see a big plug in. If its square its 700r4,if its round its a 4l60. If you are looking for one in a pull it yourself yard,only get one from a vehicles thats been wrecked,or you know for sure the engine is siezed. that doesnt mean you are getting a good one but the odds are more in your favor.

 

700r4. Make sure to get another 4x4 trans. Dont try to convert. Not worth it. 4.3 shares the bellhousing with sbc's as well. Relatively easy to find.

 

ah yes^

you CAN convert it but you MUST swap out the main shafts that run all the way through the tranny. its not as simple as swapping the tail. Man i wish it was. If you can swap these,you might as well rebuild the trans yourself as everything has to come out.

 

Yup, make sure its from a 4x4. You can pull it from fullsize trucks as well...

 

will a 700 out of a 85 blazer 4x4 2.8 work on my 4.3 4x4

 

Nope. Different bellhouseing

 

Personally i would look for one out of a fullsize v8 over a v6 one. They are built a bit better. While you working on it put a trans cooler on it also.



60 (2.8, 3.1, 3.4)degree on left 90 degree (4.3, v8s) on right

 

dosen't one from a camaro fit also

 

Yall have many 4x4 camaros around your parts?