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Discussion in 'The Garage' started by 74BBPowerHouse, May 11, 2006.
What does it really mean. I heard it wont work for my 74 with a BB. Any input?
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.
well, if it already has a BB in front of it, that should answer your question.
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
Actually there's 3, 208 is different also.
Is this the elusive TH475 or is that a different beast all together
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
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
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 .
The 475 is the same as the 400 ecept for the 475 has straight cut geras and the 400 has helical . Correct????
Yep ! Different applications had some external differences but basically the cut of the planetary gears , shallow piston/drums and such make up a TH475 .
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
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...
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.
You can also get this switch from summit or jegs
I have seen the TH 475 behind gas motors in motorhomes
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