Trans Morning sickness

[Old Rusty m1008]

In the morning the truck wants to bang gears and slip into neutral once at least so Im resigned to the fact that the trans is going. I already dropped the pan and replaced the fluid and filter. The trans pan gasket was leaking some so I thought it would be best to just throw the filter and new fluid while I had the pan down.. My question is Ive heard of guys replacing the stock th400 with the 700R4 trans. If I were to do that would I need different driveshafts? what other transmissions would fit and work with good success? Am I better off just having the 400 rebuilt? thoughts and comments please

 

[DieselStax]

I personally would swap in a 700 if my 400 ever goes just to have the overdrive, you'd need to find a civvy truck that had the 6.2 and the 700 to get the tv cable bracket and such. And I'm not positive but I'm pretty sure the 700 is longer so you'd need a different rear driveshaft, the front should still fit

 

[cliffyp]

.... And I'm not positive but I'm pretty sure the 700 is longer so you'd need a different rear driveshaft, the front should still fit

You do not need to alter either driveshaft if you switch to a 700r4. Other than finding a bracket for the TV cable, it's a very easy swap