I am looking for an answer to help out my freind, his 700r4 is shot and has a th400 for free laying around, what all will it take to make the swap? crossmember for sure but will he have to do anything else? thanks

Colt

 

make sure it has a SBC pattern and not BOC. torque arm mounting would have to be over come. 3 speed shifter instead of 4

 

tranny is longer too, gotta cut the driveshaft...

too bad it's not a th350, you could buy a torque arm adapter and slap it right in.

I have never heard of a 400 installed in a 3rd gen, just 350's.

Your best bet is to grab a 700 from a junk yard for a few hundred bucks

 

Never heard of one in a 3rd gen? A few people run them including me. I was able to use my stock driveshaft with a TH400 slip yoke put on. Only thing is, my car originally had the 3 speed 200c. The length of the TH400 short tail and TH200c are within a half inch of each other. I bought a Spohn crossmember and torque arm for the swap but I'm sure there are other options out there.

 

I have a th-400 in my 88 camaro.

Your buddy will need at the min.

A 82-83 F body 200c 3 speed auto driveshaft, or his stock one cut down.

A "swap kit" I used the hurst kit on mine. It has the crossmember, torque arm mount bracket, shift cable bracket, vac line, etc.. Around $115-125 from summit.

A conversion front U joint. The th-400 slip yoke is bigger and takes a bigger U joint.. The conversion Joint will have 2 caps to fit the driveshaft, and the other 2 caps will fit the slip yoke.

Th-400 slip yoke

th-350/400 torque converter