another Np208 going south

[adamforsythe]

I believe my NP208 is going south.....it's making noises like what you would hear if you put it in 4 low. The only way to make it go away is put it in 4 low go foward then put it in 2wd and go backwards. I have a NP205 in another truck that I just have to drop. BUT This truck is a 1979 GMC truck with a standered. What would I have to do to mate it up to my Th350?
Thanks
Adam

 

[74poj]

the 205 on the standard should have a 10 spline input shaft, usually the th350 has a 27 spline output. as long as you have the right adapter you should only need a 27 to 10 conversion. check out advance adapters, the 27 to 10 is reasonable. or just swap in the whole tranny/t-case combo!

 

[pauly383]

Some guys change the input shaft of their 205 when they go doubler .

Post up for a 27 spline input , and th350 adapter in the wanted forum . Someones going to have the parts somewhere .

 

[adamforsythe]

So the ony thing that I really need to do this is a Adapter like: https://eshop.advanceadapters.com/commerce/catalog/productmisc.jsp?product_id=2629&czuid=1145838619563
To mate the two together? Or do I also need to change out the input on the Np205.
Thanks
Adam

 

[74poj]

don't know if the adapter you've got between the 208 and the 350 will work. you may need a part like this https://eshop.advanceadapters.com/commerce/catalog/product.jsp?product_id=1470&czuid=1145968551502

 

[adamforsythe]

Hello,
I know this much. I am plannuing on getting the TH350 TO NP205 10 Spline Coupler and the stock adapter like what you showed me.
Thanks
adam

don't know if the adapter you've got between the 208 and the 350 will work. you may need a part like this https://eshop.advanceadapters.com/commerce/catalog/product.jsp?product_id=1470&czuid=1145968551502