Is my 700R4 dead?

[beater_k20]

TJ, i can only imagine what this kid is arguing with you about now. i'm likin the ignore feature.

 

[big83chevy4x4]

I am not sure but i beleive it has nine clutch packs.

nope, not even close, 5 was the correct answer.

I think it has 4 planetarys and one sun but im not sure.

wrong again. 2 planetarys, the sun does not count because it only moves power, like a driveshaft.

it also has 2 sprags and 1 band. all of which, when combined in certian combinations creates a "gear ratio" in the tranny. this is the only part i have no figured out on a 700r4, how each ratio is caculated.

im starting to think that you don't know as much about a 700r4 as you think you do.

 

[big83chevy4x4]

cant find my 700R4 literature from college, but i recall a boost valve in the 700R4 which boosted line pressure in the in low and reverse, very well may have been an integrated part of the valve body too. i'm going to look for it some more tomorrow. might even help solve the problem with some of my troubleshooting manuals.

the reverse boost valve does not really give it more pressure, mainly just give it pressure when selected. there is a T.V. boost valve also, it gives pressure to the forward gears when selected.

i've had 3 700R4s lose a direct clutch, havent heard of anyone else having problems like he's having in a while,

ive lost reverse in the first 700r4 i owned, day after i bought the truck actually. the reverse/low clutch and hub was wasted.

everybody else seems to lose 3rd gear, without 3rd, its pretty hard to get to 4th.

ive done it before, manual 2nd up to about 65 mph, then shift into OD and coast till it catches. i was 40 miles from home and absolutly no way to get home, as my dad was with me and we had no money for a towtruck. 3 miles from my house, 4th finely went though. that tranny was totally gone, just about every friction was not there in almost every clutch pack.

 

[dirtwarrior17]

I never said i knew any of that and i don't need to becuase i am not telling him for sure what is goin on you are. Moving gears whether planetary or not create very small metal shavings that along with others get picked up with the filter but some still make it to the fluid. Not chunks, shavings. Those words are right from 2 very knowledge trasmission shops one being the biggest we have up here.

I was giving him an answer to his post name.... dead 700r4? thats all He wanted to know if the whole tranny was gone and i basically said no because of what it was doing and tried to explain to him that it couldn't be the gears and then said it might be a servo...

how hard is this to understand?.... I don't know why we are arguing i never said i new that.

 

[big83chevy4x4]

but you did say that you know a 700r4, just testing ya.

im sure those "knowledgeable tranny shops" also charge $2000 to rebuild a 700r4 that only lasts 50,000 miles, if that.

 

[dirtwarrior17]

I really don't know because i just asked them questions... my built 700 was around 900 in sac but the dude i bought my blazer from already had parts so it was basically labor and clutches.

im starting to think that you don't know as much about a 700r4 as you think you do.

I'm starting to think that you think i think i know more about a 700 than i said... what? that doens't even makes sense, or does it?.... nevermind. lol

King of queens is on...

peace

 

[nemesis_pyros]

So if my 700r works fine except for it slipping really really badly in third then this would indicate that the clutch packs are gone?
This is what my research has also turned up, I'm just looking to confirm the actual problem before i drop the 1500 on a rebuild.

Thanks for the help sorry to deviate from the original question.

 

[83ZZ502_Jimmy]

This message is hidden because dirtwarrior17 is on your ignore list.

Ahh, breath mint.

John

 

[beater_k20]

So if my 700r works fine except for it slipping really really badly in third then this would indicate that the clutch packs are gone?
This is what my research has also turned up, I'm just looking to confirm the actual problem before i drop the 1500 on a rebuild.

Thanks for the help sorry to deviate from the original question.

yes, if it wasnt a "problem" before, it is now. if you could have got it into the shop right away when the problem started occuring, and found, say a bad valve in the valve body, there's a chance you could have saved it. if its slipping, its toast.

 

[WantedaDodge]

well, I'm pretty sure it's toast, I put it on jack stands and put in in reverse, sprayed WD40 in it and now it makes an eerie sound... Like it's going to fall apart.

Still seems to work fine in drive, but I'd say it was time for a rebuild.

What do you all think about swapping a 350 and a 205 in it though?