i have a 700 r4 and in my ta i have a 200 auto are they the same length will i need a new driveshaft?

 

No, they are different. That depends on whether your existing drive shaft is broken, and/or what you intend to do with these 2 transmissions.

 

was planning on building the 700 r4 for a build up and building the motor up when i paint the car

 

What car? Is this a 82 T/A?

What do you intend to do? Swap the 700 in place of the 200?

If so, you need to get the drive shaft, crossmember, torque arm mount, and maybe the torque arm itself from one of these cars with a 700 in it.

 

And on the '82 the TH700 crossmember isn't a direct bolt-in, have to add two holes to the subframe for the rear-most bolts.

Not a big problem, I did it on my '82 Z28 and just dropped a bolt thru the hole from the body side of each hole. I used a 1/8" thick steel plate to reinforce the sheetmetal, and a lock-washer to hold the bolt still while torquing the nut to the crossmember.

Speedo cable won't reach the sender on the longer TH700 either, gotta replace that.

 

I cut up my crossmember, moved the center back, welded it, and used the original bolt holes in the subframe. My speedo cable reached just fine. Third-gen 700r4 drive shaft installed. The torque arm mount bolted to the 700r4 without a problem. Cut a couple of inches off the torque arm(it covered up the speedo connection on the 700r4 otherwise) Overdrive sure is nice with 3.73's

 

hey 82 camaro how fast are you going in overdrive with the 3.73's?

 

Around 2150 rpm at 60 mph. Without overdrive it was 3000 rpm at 60 mph.

 

whats your RPM at 30 and 50? i plan on getting 3.73's soon with my 700r4 so if these numbers arent that bad im definetly getting the 3.73's