Yes, But you will have to move the rear transmission cross member and more then likely have to change the drive-shaft. It would help alot to know what year and model it is. That would have alot to do with your modifying that you would have to do.
measure the size of the output shaft to the rear pinion seal at the differentials yoke. (were the ujoint on the driveshaft meets) I've had two drive shafts altered at a local machine shop for about 200 dollars. im sure the spline count on the 400 transmissions output shaft will match the rear for its particular application is on GM made vehicles.
also keep in mind anytime you would want to change a transmission that it has a bellhousing (where trans meets and then connects to the rear main of engine) that will bolt up to the back of the block.
You can substitute a 400 for a 350. Get one with the same length tailshaft as the 350 you are replacing. You'll need the correct driveshaft yoke, and the kickdown is different.
Yes, as long as the transmission has the Chevy bolt pattern.
YES, That is no problem, it will bolt right up.
Yes, if they were built with the standard Chevy bolt pattern.
It will if the trans has Chevy bolt pattern.
any Buick, olds or Pontiac turbo 350, turbo 400 or any overdrive tranny should bolt up to your engine.
Absolutely. Chevy bolted them to the 350 straight from the factory. The 700 R4 has the exact same bellhousing bolt pattern as the 350 and 400 turbo does.
yes a 350 turbo converter will fit a 400 turbo and vice versa
No it will NOT interchange. The 350 and 400 turbo are actually VERY different transmissions.
Yes it will all the tranny bolt ups are the same.
The 350 turbo is a good transmission but the 400 turbo will take more abuse.
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.