Hey guys. Im not sure if I overlooked a pre-existing thread for this question so apologies if this is incorrect.
My roomate just got a really sweet blue 1991 rs. Low original miles, great condition, highly optioned and tons of potential for an overall head-turner and performer. It has a 3.1 so we have an unknown sbc350 that we want to swap. I know this has probably been done and asked about a million times but its a first for us so any help is appreciated.
I am looking for a database for the 700r4. I hear there are different versions so I need to know which V8 donors to look for when sourcing the car. My 84 z28 has the "baby" 7r4 I was told but then when the 350 came back in 87 it got an upgrade (different bolt pattern?) I was told so I just need some help from someone who can shortcut me to getting the right tranny/donor car to match the sbc. I guess at the end of 91 they went to the 4l60 and let go of the 700r4?
Fact geniuses welcome!! lol
thx

 

there is no "baby" 700-there are v8/90* v6 versions and 60*v6 (2.8-3.4) version there are early (82-early 84) version,upgraded ~3/84-87 version and further upgraded 88-93 version. The electronic control 4L60E version came out in 1994.1988-93 would be most desirable,but I have had very good results with the 8-84 vintage 700 in my car.One of the 1984 upgrades was input spline was upgraded from 27 spline to 30

 

The 93 trans is one year only, unless you want to rewire the car for a 5 pin TC harness.

Don't do it OP. The odds of successfully completing a V swap on a six cylinder and having a car that doesnt end up rotting in a shelter belt a short time later are astronomical.

 

For a V8 you should search for the 88-92 V8 tranny.




There is a molded "LINE" on the housing on 88 & up...... an easy way to quickly see if it's pre-88 or not.