700R4 Driveshafts

[corelokt]

A quick Q.
Do the CUCV driveshafts work well with the longer 700R4 transmission?
Reason I ask, My "new" transmission was going down the road, then it wasn't. No idea what went out. Ordered a new Mad Dog Level 3 transmission as this has already been a 2 week ordeal.

 

[Atwater]

if the 700 is longer i would think the shaft length would have to be changed. how much longer is the 700?

 

[southdave]

if the 700 is longer i would think the shaft length would have to be changed. how much longer is the 700?

Like an inch or less.. I don't think tha is tthe problem

 

[cliffyp]

I just did this swap. The rear goes on fine, no prob. I haven't gotten around to putting the front on, but it should be fine as well.

 

[corelokt]

Did yours have an adapter between the transmission and the transfercase that was longer, like three inches longer?
I'm trying to figure out what caused mine to fail after it was working for 40 miles.

 

[cliffyp]

I pulled an adapter out of a Blazer with a 700r4/208 from the junkyard. I didn't measure it, but I would say the adapters are roughly the same width. I would think that if the adapter were much thicker, then the output shaft from the 700r4 would need to be longer to cover that distance or it wouldn't seat into the transfer case very far. I think the only variation in my drive line length is the length of the 700r4 case, which is negligible.

 

[cliffyp]

Was your TV cable set correctly? 700r4 will burn up real fast if the TV cable isn't properly adjusted.

 

[corelokt]

I provided very detailed info regarding the TV cable. This was a factory set-up, the transmission came attached to an engine. The adapter was longer than the one in the M1008

 

[Speddmon]

From what I've read, the proper adapter for the NP208 transfer to bolt to the 700r4 is shorter than the one behind the stock TH400. So, with the longer transmission and shorter adapter, you should be just fine. I cannot speak for the NP205 transfer though.