What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

My SHAFT is too LONG!

81jimmyslt

81jimmyslt

1/2 ton status
Joined
Jun 5, 2003
Posts
1,557
Reaction score
0
Location
So Lake Tahoe (Rubicon), CA
I need some doubler and transmsission help.

Has anyone here put in a doubler on their stock TH-350 that was mated to a 208 case?

Heres the problem.....

My 208 adapter is about 5" thick, so the output shaft on the transmission is really long.

You can use the 208 adapter to 203 but you have to re-drill and tap the housing. I just got new rebuilt cases from NWF.

Or I bought the 203-350 adapter on ebay, but now the shaft is way too long because the adapter is only 2" thick and the shaft isn't splined back far enough to cut.


Options:

1)Change out shaft on tranny -----$750
2)Put in new th-350 --------------$1000
3)Put in new th-400 $2500

These are shop prices.

Anyone else run into this problem?


Thanks
Jesse
 
81jimmyslt said:
I need some doubler and transmsission help.

Has anyone here put in a doubler on their stock TH-350 that was mated to a 208 case?

Heres the problem.....

My 208 adapter is about 5" thick, so the output shaft on the transmission is really long.

You can use the 208 adapter to 203 but you have to re-drill and tap the housing. I just got new rebuilt cases from NWF.

Or I bought the 203-350 adapter on ebay, but now the shaft is way too long because the adapter is only 2" thick and the shaft isn't splined back far enough to cut.


Options:

1)Change out shaft on tranny -----$750
2)Put in new th-350 --------------$1000
3)Put in new th-400 $2500

These are shop prices.

Anyone else run into this problem?


Thanks
Jesse
Click to expand...

Someone could change that th350 shaft for a lot less then that. I would get the shaft swapped out, to help keep the overall length down. The TH400 will not work because it has a 32 spline input.
 
As long as there are no complaints that your shaft isn't long enough, you should be fine. :D
 
While I wouldn't trust myself to tear down and swap a TH350 output shaft....

Disassemble, drill/tap, and reassemble a 203 sounds like cake.

Or course - I don't know what your wheelbase situation is like. Maybe 3" shorter overall length is a bonus.
 
Ya definately going for shortest as posssible, want to reduce driveshaft problems. Looks like I'm going to drop it and bring it to the shop and have them beef it up while there at it.
 
I don't know how much $$$ you have into your tranny, but you could prolly find another TH350 with the shorter shaft for a decent price too. I dunno just an option. The 208/TH350 combo might be worth something to somebody wanting to do the swap since they are kinda rare in the stock form
 
Ya I already thought about that route, thats why I mentioned a th-400 might as well go all the way. But I'm trying to keep costs and time down.

Oh and by the way my 208 case is destroyed who wants one of those flimsy things :)

Jesse
 
We also sell rebuilt to customer Spec TH400's. I have a 203 version on hand.

NWFTH400.JPG


The TH400 in the photo is a NP205 version (in your case you'd want the 203 version), rebuild, Stage 2 Shift kit, HD Sprage, and HD TCS Torque Converter. This transmission is going to Hawaii.

Our Rebuilt TH400's Start @ $1199, No core required.
Give us a call at the shop, we can get a custom quotation for your application, including a billet adaptor and new input gear for that 203.

-Kyle.
NorthWest Fab
 
$1200 bones

hmmm....thats a sweet deal, but I still think I need to shave off some more coin for other mods for now. When the time comes though I definately like the way you guys conduct business, you'll hear from me again.

Jesse
 
I also forgot we can proviude a TH400 with a 27 spline tailshaft - you won't have to change the input gear in the NP203.

Talk to you soon.

-Kyle.
 
You must log in or register to reply here.

Latest Posts

Top Bottom