My apologies if I'm posting this question in the wrong forum. This is a really massive site, and this is my first post.
Anyway, I drive a T-bucket with Chevy drivetrain. The TH350 has gone south, and I've decided to switch to a TH400. I have two questions about this that I hope some of the more experienced members might be able to answer...
First, I'll be buying a late '60s TH400 core and having it rebuilt. I'll have to buy a yoke separately, but I'm confused because there seem to be quite a few different yoke lengths being sold on eBay for the TH400. Are the various yoke lengths I've seen the result of different tail lengths? Are there only three yoke lengths, one for each tail, or is it something else?
Second, I could really use some help regarding the differences between the two transmissions. I'll have a new cross member fabricated during the swap, so the mounting hole location isn't a problem. Here are the other items I'm aware of:
1. The driveshaft will need to be cut shorter.
2. I have a trans-mount shifter, so I'll be ordering a conversion kit for the TH400.
3. Oil filler tube and dipstick.
4. Electric kickdown switch. The T-bucket is so light, Im not sure I need a kickdown. However, the tranny rebuilder tells me that I'll damage the lower clutches without it.
Please let me know if there's anything I've missed. Especially, if I've missed a major item like tunnel enlargement or some such, I would really appreciate knowing.
Thanks for the help guys! Just to be sure I'm clear, here's a photo of two yokes. Both are TH400 slip yokes. I don't have a clue how to determine the length I should buy.
Jack
