69 transmission ?????

[c3006]

I am resurrecting my uncles old 69 c10 that been sitting in a barn for 15 years and am like so many hopping to find help and guidance on here. The truck started like as a big block automatic but had a 307 with a 350 turbo installed and then when that motor expired it was relegated to the barn. I have built a 327 and have a 400 turbo with a short shaft being built now and was wondering if this combo would go back in place of the one I'm about to pull out or will further mods be necessary. Thx for any help or advice offered. Clint

[Wrenchbender Ret]

The truck was originally set up for an automatic trans. The 327 & 400 should fit right in . The only major mod might be the drive shaft length.

[c3006]

Thx,it looks like the shaft coming out of the transmissions is a little different so a yoke change should handle that but I was hopping overall length will come out the same.