the older style turbo 400 has a point on one side of the pan in back of the transmission
yes a 350 turbo converter will fit a 400 turbo and vice versa
The tranny slipping
There's only one type of 400 turbo.
No it will NOT interchange. The 350 and 400 turbo are actually VERY different transmissions.
The 350 turbo is a good transmission but the 400 turbo will take more abuse.
Shift into Turbo
Every part that is in the 400 is heaver and bigger then the 350. The 350 turbo is light duty, but can be modified to make it tuff. The 400 is already tough from the factory.
i need an exploded view of a turbo 400 transmission? there is a site with trans schematics tcsproducts.com