transmission &transfercases

mycave

Junior Member
I am looking for a TH 400 trany & a NP 205 t-case does any one know of a place arround springfield il. or a web sight, any info will help rebuilt our used.
 

Doug406

Member
How much are you willing to spend?/ I have a 205 and Fresh rebuilt th350, and all the driveshafts ( both brand new) for a longbox with dana 44 and 14 bolt setup.
 

Abe

Member
talk to the guys at aamco transmission, i just bought a th400 tranney with lifetime warranty, without a core for 800.00, the np 205, i believe it was either 4 wheeler magazine or petersons that had an article on how to tell the difference last month, i would start scavaging the old parts yards in kentucky, might be a little drive, but there are a lot of treasures in those yards!!!<p>-abe<br>
 

Abe

Member
i found the magazine that addresses the np 205 recognition, it is the March 2000 issue of 4x4power pgs 44-49<p>-abe<br>
 

Abe

Member
here might be a little more help for you if you plan to scavenge the parts yards.<p>check out chucks chevy pages, also If the rig had full time 4x4 it is a np203 if it is a chevy 70's model with man trans odds are it is a 205 auto trans odds are it is a 203. Anyway.......you might find additional help as far as identifying a donor vehicle specs by visiting chucks website<p>-abe<br>
 

Abe

Member
here might be a little more help for you if you plan to scavenge the parts yards.<p>check out chucks chevy pages, also If the rig had full time 4x4 it is a np203 if it is a chevy 70's model with man trans odds are it is a 205 auto trans odds are it is a 203. Anyway.......you might find additional help as far as identifying a donor vehicle specs by visiting chucks website<p>-abe<br>
 

jim

Junior Member
an easy way to i.d. the 205 is by the shifter rod sticking thru the floor. the 205has a round rod coming out of the floor topped by whtever handle the previous owner chose to install. it is the only t-case with a round handle<p>----------<br>big Jim<br>
 

jim

Junior Member
i forgot .look for a case with a bracket bolted on the passenger side that bolts to the frame. my first case didnt have that ,after breaking 2 adapters(?)and 1 transmission in half i realized the bracket was a necessity for survival under less than perfect conditions<p>----------<br>big Jim<br>
 
C

ChucksChevyPages

Guest
The NP 205 has a drain plug on the back. The NP 203, has no drain plug. There is a photo of each case, on my web pages, under the &quot;Parts Identification&quot; heading.<p>~Chuck<br><p>----------<br>Chuck's Chevy Truck Pages - Snowplowing Central<br>http://members.aol.com/csmith669/plowcentral.html
 

RON PRIES

Junior Member
You can pick up the 205 manual version and convert it to a turbo 400.<br>You need to go to your local GM dealer and have him look up 1981 1 ton 205, and order front input cluster, bearing and snap ring, adapter plate, then take transfercase apart and have machine shop cut the case to accept the input bearing and reassemble. Go a head and buy all gaskets and seals we have done several of these on are GMs got tired of shifting.<br>the bolt holes on the side of the 205 DOES NOT BOLT TO THE FRAME, But to a plate under the motor mount think about it if you bolted it to the frame you would make it rigid.
 

plowking35

2000 Club Member
Location
SE CT
I have the adapter for between the 205 and a 400. The 205 used a bolt on yoke, not a slip yoke like on the 208. The 205 did have a plate from the t case to the frame but GM stopped using it in the late 70's early 80's<br>I had a 73 with a 205 that had that plate.<br>You should be fine to run the truck with out that bracket.<br>My 86 k-3500 with a 400 and 205 didnt have that plate,I plowed 5 years with the truck and never had a problem.<br>Dino<p>----------<br> Professional Ice and Snow Management <br>Products:Services:Equipment www.sima.org
 
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mycave

Junior Member
Hey guys thanks for all the info I think I will stay with my 700r4 and have it built And adapt the 205 to it
 

RON PRIES

Junior Member
Mycave:<br>I don't know where you got that idea but I wouln't use that trans if you plan on working this truck in any way!<br>I don't know if they will adapt.<br>I never even investigated this because I would never consider using the 700R-4.
 

MTCK

Senior Member
Location
Fairbanks AK
My 700r4 workes great, after having a performance build done on it for towing. Something to consider though, is that these transmissions are famous for running hot. Get the biggest cooler you can for it, a temp gauge, and watch it. It's well worth the money you'll save.
 

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