Drive shaft length

[05boostedAv]

have a question about drive shaft length. Swapping the 4l60 4wd system for a 2wd 4l80. Wanted to know if anyone knows what vehicle i can snap a driveshaft from that would fit or what length it would need to be.

 

[redheadedrod]

Also interested in this question since I am looking to swap my 4wd system over to 2wd temporarily until I have money to do a lifted suspension to match the higher output motor and 3/4 ton rear end.

I know I measured my standard driveshaft from Ujoint to Ujoint and got 51 inches...

Rodney