TURBO 400 OR 700r-4, I think I may go with a 400

[MEGALADON]

After hearing how most here are having problem with 700's, I think
I want to put the 400 that came with my 454 out a 1 ton truck. I had to buy a shaft for my 700R-4 in order for it to fit up, do I have to buy a shaft for the 400 to????? I know the tail shaft cover has to come off.

If I did this would the transfer case have to be moved?? I know the 700 would
fit without any mods to the transfer case, because it came with a overdrive when new.

Its on my 82 GMC truck, I have a 350 trans in it now, but the case is cracked.
It still runs and drives with the BB, but I know i'm gonna bust it soon.

 

[74757685k5]

go 400 with a BBC.

 

[Hossbaby50]

Get a TH400. I have a 700 in my truck and I have a 400 in my garage waiting for the 700R4 to die. With a BBC I wouldn't even consider a 700R4 because you would have to spend all kinds of money on the tranny to get it to live for a long time behind a BBC.

Harley

 

[sweetk30]

350 and 700 = 27 spline shafts


400 = 32 spline shaft

adaptor to tcase is 4 bolt for 350 700 tranny

400 is 6 bolts.

bbc best to go 400 tranny. and as it had 454 factory it should have the better clutch packs in it than a light duty use 400. by this i mean higher quanity of clutches per pack.

 

[MEGALADON]

400 is 6 bolts

DANG IT, your right, So I have to find a adapter to
Man, this can get exspensive. I may have to use the 700 till
it burns up, since I have the parts I need now, to make it fit.

 

[sweetk30]

if you are running a 208 try this. http://cgi.ebay.com/ebaymotors/th400-to-Np-208-adapter-Chevrolet-CUCV-GM-400-208_W0QQitemZ8005611153QQcategoryZ33727QQrdZ1QQcmdZViewItem


he is cool . i buy stuff from him time to time. he is a ck5er to just not on much these days. then all you will need is the 32 spline input gear. also look at his other stuff for sale he strips cucv trucks.

 

[MEGALADON]

THANKS sweetk30, My next question would be does the t-case have to be moved, or all I need it the adapter on e-bay

 

[sweetk30]

also need the 32 spline input. this will require spliting the tcase . good time to freshen it up. and also need the tail shaft for the tranny.