th350 swap details

[mactizen]

Found decent deal on a th-350 locally and hoped to clear up the rest of the little details about getting it into the car if I choose to go with it. The transmission has a JW ultrabell so according to their site that has the BOP pattern and should bolt rite up, I know I will have to move my crossmember (or just the mount) a little bit but thats not a major problem. I havn't been able to find alot of info on what torque converters people use, does a 350 torque converter bolt to a GN flexplate?and it is the same converter as a 400 correct? I guess thats really the only things I need clarification on. After that its just the kickdown cable and the vaccum line/checkvalve. Also how bout the shifter? I have a B&M shifter and according to the summit catalog it works for 200,350 and 400's any issues there at all?

Am I missing anything major here?

If you read any of my other posts on transmission choices I have basically put the glide on hold untill I make more power, it seems maybe when I make a few (250+) more ponies it would be a good choice.

Thanks for any help.
-Mac

 

[jetmech]

I have a 350. Get a crossmember from a 3 speed cutlass or regal. I use a coan conv. but it took them 1 additional restall to get it right. It does bolt up to the flexplate and u use the same driveshaft. I did buy a lokar dipstick for it. Speedo will be way off but a speedo gear change will get it back. I dont drive my car much and race it 4-5 times a year. I would get a conv. from ptc Dusty seems to know his conv. well

 

[Dusty Bradford]

Like he said, get a crossmember from the local salvage yard. Pretty much any G-body there should have the right one.

The converters are different. You will need the correct splines for the T-350 with the small bolt pattern for the Buick flexplate. The stock linkage will even work with the stock shifter with some finessing.

 

[mactizen]

Thanks for the replys guys, it's all going in my swapped mazda so the cross memeber I allready have can be unbolted and I would just need to make some new tabs to bolt it too.

I have no speedo now and no plans for one later so no worries there

The B&M shifter i have is reported to work with the 200 and a 350/400 so should be ok with that.

I'm very torn on what to do these days if a well built 200 would be a better way to go so i can have the OD when i do drive on the street. Just can't make up my mind 2 speed 3speed or 4 speed, not enough upsides or downsides to any of them for me to really make a choice.