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.

*HD* Stamped on a TH400

who ever said that is wrong. it will work with the motor fine unless its a b.o.p verison. Not sure what t case you have (203 or 205) and what the transmisson is (2wd or 4wd) we need more info.
 
205 Transfercase. It now is setup with a Built 454 TH350 and 205. Its for a 4wd application. Im just trying to make sure itll work before i buy it.
 
74BBPowerHouse said:
205 Transfercase. It now is setup with a Built 454 TH350 and 205. Its for a 4wd application. Im just trying to make sure itll work before i buy it.
Click to expand...
no it won't work with your current t-case with out swapping input on the case there also 2 different 4x4 TH400 one is for the 205 and one is for the 203:mad:
 
Actually there's 3, 208 is different also.
 
nvrenuf said:
Actually there's 3, 208 is different also.
Click to expand...
really??? 208/241??? well I know a 241 from a TH400 will replace a 208 from a 4-spd man and here everbodys always Saying how well chevrolet stuff interchanges
 
resurrected_jimmy said:
Is this the elusive TH475 or is that a different beast all together :confused:
Click to expand...


As long as the out-put shaft fits the correct style/model transfercase a TH475 and all Chevy pattern TH400 cases will work.

As far as I can recall the 4x4 versions of the GM version TH400 had three different out-put shaft lengths (just as NEVRENUF said ).
400/203 = shortest out-put
400/208-241
400/205

Note: There are several different out-put shafts for a TH400 that were offered in 2WD and other manufactures but the GM 4WD's came in three lengths depending on what it was in front of .

Tom
 
tarussell said:
As long as the out-put shaft fits the correct style/model transfercase a TH475 and all Chevy pattern TH400 cases will work.

As far as I can recall the 4x4 versions of the GM version TH400 had three different out-put shaft lengths (just as NEVRENUF said ).
400/203 = shortest out-put
400/208-241
400/205

Note: There are several different out-put shafts for a TH400 that were offered in 2WD and other manufactures but the GM 4WD's came in three lengths depending on what it was in front of .

Tom
Click to expand...
The 475 is the same as the 400 ecept for the 475 has straight cut geras and the 400 has helical . Correct????
 
yellowK20 said:
The 475 is the same as the 400 ecept for the 475 has straight cut geras and the 400 has helical . Correct????
Click to expand...


Yep ! Different applications had some external differences but basically the cut of the planetary gears , shallow piston/drums and such make up a TH475 .

Tom
 
yellowK20 said:
The 475 is the same as the 400 ecept for the 475 has straight cut geras and the 400 has helical . Correct????
Click to expand...

that rings a bell, its been several years since I looked into the 475, I know they put them in tow trucks and school buses (diesel application???) and you had to do some sort of mods to them to run em behind a gas motor because they don't like the rpms
 
resurrected_jimmy said:
that rings a bell, its been several years since I looked into the 475, I know they put them in tow trucks and school buses (diesel application???) and you had to do some sort of mods to them to run em behind a gas motor because they don't like the rpms
Click to expand...
I thought they were mostly used in breadtrucks, motorhomes,Moving vans and such with gas and diesels
 
Thanks for all the input guys. Ill try and get you some more info on what it was behind. A buddy of mine got it through his gfs family. Hes was saying how strong it is because it has the "HD" stamped on it. It has a 205 hooked to it to. I just need something to replace my blown up TH350. I only have 110 miles broken in on that motor. Nobody around has TH400 hooked to a 205. Everyone has 2wd Th400. Which I would only have to get a 205 shaft for right and a 4x4 adapter?
 
i thought you just said it had a 205 hooked to it...:confused:

Also you need the pedal assemby from a 400 truck. it has an electronic switch to kick down the tranny.
 
is the "HD" really stamped into the case? Never seen that before. My HD th400 has the HD letters cast into it. Not 100% sure which planetaries it has... but I will soon. :grin:

j
 
79k20350 said:
Also you need the pedal assemby from a 400 truck. it has an electronic switch to kick down the tranny.
Click to expand...
You can also get this switch from summit or jegs

I have seen the TH 475 behind gas motors in motorhomes
 
You must log in or register to reply here.

Latest Posts

Top Bottom