1978 gmc 4x4 turbo 350 to 400 swap help.

[chevyfreek]

Ok i have a 78 k15 gmc long bed has a 350 and turbo 350 and np203 t case. Tranny and t case is out, found a turbo 400 from a guy and its bolted up to a 203 t case from a 78 k20 long bed, will I be able to use my drive shafts or will I have to get them adjusted? Or will I be able to use the drive shafts from the k20. Also i am positive i can i wanna ask and make sure can i use my t case with the 400? Any and all help is very much appreciated.

 

[bucket]

Your t-case won't bolt to the th400. Use the shafts from the K20, but you will need a conversion u-joint for the rear.

 

[chevyfreek]

Ok, cool he's selling the Tcase also. Thank you bucket for the fast response.