I'm swapping my broken 327/TH350 combo out for a fresh 350/700R4 combo. I've read at least a dozen posts and some of them say you have to swap out the TH350 crossmember for a TH400 crossmember, and some say that the TH350 crossmember works fine, you just have to drill a couple of new holes in the frame. My car is a 69.

Can anyone say for sure if I need a TH400 crossmember? I don't want to spend the $80 on one if I don't have to.

I think what you need to do is use a 400 cross member and modify the holes in it. Not drill new holes in the cars frame. Another option is to pick up a new cross member for a 700R4 from someone like bowtie overdrives, more expensive this way.

The T400 crossmember works with 200R4. Not sure, but I think PG X will work with 700R4 as you described.

A turbo 400 X member will work with a 700R4 if the holes are modified. A 350 X member will not work. The 200's mount is longer still, needing a custom X member.

Tim

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More confusion! It may boil down to how much work you are willing to do to make the TH350 crossmember work. I know the TH350 crossmember works with the 200R4, no custom work necessary as it's the same physical size as the TH350.

Sorry if I adding more confusion here, but I may or may not be right with the info I posted regarding the cross members for the 700R4. However, I'm 99% sure that the 350 cross member will not work with a 2004R and that with hole modifications to a 400 cross member, will work.

Anyway, what you should do is call BTO and ask. They will tell you straight up what will and won’t work. 760 947 5240

Thanks, I'll give them a call

I called bowtie overdrives and was told the TH350 crossmember would work fine. I just had to move it back on the frame and drill new mounting holes in the frame.

I saved myself the headaches and bought the Bowtie Overdrives crossmember. It bolted right up with no extra drilling.