jmkvette

I was recently driving my '85 vette (automatic) and was coming up to a stop light when I heard a loud pop and rattle. I wasn't sure if the noise came from me until I started to pull off again then suddently at about 10 mph it felt like the rear end or the rear brakes had locked up, The car felt like it wanted to go but couldn't. Then I heard a clunking and grinding sound. Luckily I was only a 1/4 mile from my house so I was able to limp it back at about 8 mph and everytime I went over 10 it would start all over. The next day I put the car on stands and put it in drive, at about 10 mph I could here the trans making noise and trying to lock up (There was no noise, pre warning or indications that something was wrong before this happened). I figured this means that 2nd gear is gone and I just need another transmission but I wanted to make sure because I've read another thread that had something similiar and it was an easy $10 fix. If I do need another transmission, what other vehicles have that exact transmission that will just drop in (Automatic or manual).

Pete K

I can assure you that anything in the drivetrain that is making noise and locking up the tires is not a $10 problem. Considering $10 is not enough to buy a trans filter, you are screwed.
If it is in your transmission, then you have major failure of a drivetrain component. Which component(s) will become clear once it comes apart. Get the checkbook ready, cause it will get a workout.

Pwnage1337

This made me laugh lol.

I think you are looking at atleast $1000 in repairs

jmkvette

Thanks Pete K. I kind of figured I would need to replace the transmission. can anyone tell me what other vehicles have the same trans as the '85 vette? There's a junkyard near me that sells parts for really cheap but they don't have vettes. would a trans from a camaro work? I was also thinking of converting it to a manual, is that a fairly easy job? I know I would need the flywheel and pedals, whould I need to replace the drive shaft also?

Pete K

All of your questions have been addressed dozens of times. Click search, then advanced search, then type in the questions. You will find dozens of threads to review.
Good luck either way.

aklim

You would have to take out the output shaft since it is different in length and change the tailshaft. When all is said and done, maybe you best get a rebuilt trans. Give Rossler Trans in Girard OH a call.

gaguy

Get transmission manual and read for 5 hours, then 5 more. More you read easier job will seem.
I never took Corvette tr. apart but I guess it takes tr. mechanic 30 min. to do(not including cleaning time).
I ordered manual yesterday.
Converter, pan, filter, valve body, servos, pump.
After that you can just turn tr. tail up and rest of parts will fall down.
Did I say it right? Pete?
Or you can send me your transmission. Today and yesterday I fixed 2 transmissions: from power seats, right and left.

Crzyfrlss1

Go get a trans. from Mad Dog Transmissions. for friend did this for his 85' after the original went south on him. Awesome tranny and not one single factory component in it except the case.This is the one he got...very good price too.

http://www.youtube.com/watch?v=DttjRr_SNGY

But first take your driveshaft out and make sure it's not your rear end thats busted instead.

gaguy

Send it to Pete.

gaguy

http://www.youtube.com/watch?v=_5av4...eature=related

ch@0s

frenchyoliver

Can tell you, looking at those TV spots makes me dream !

We have a real American transmition problem here. ZERO reliable shop all over France.

rad928music

those early 700r4's in the vette dont last, had i known that myself id have put a trans cooler in there and run systhetic fuilds.
If you do get another tranny you can save some $$$ by putting it in yourself, just get a tranny dolly and some good jack stands, and a chilton manual and take your time.
I did mine and she's on her 4 year from a tranny i got of ebay for $350.
good luck

gaguy

Automatic transmissions wear out like brake pads, clutch disks are made off the same material. And like brake pads it depends on style of driving.
There were a lot of complaints about Accord 98-02 transmissions. When I took mine apart I didn't find anything bad except clutch discs. (140K)
When discs are worn out fluid becomes dark and transmission is slipping.
Particles of worn out friction discs clog main filter and small screens.
Who knows, are there specific problems with 700R4 transmissions? Beside common wear?

jmkvette

Thanks guys. After having a couple of days to think about it, I've decided to go ahead and rebuild the trans. myself. I found a detailed rebuild DVD on ebay for $30 and a master rebuild kit for $142. I am thinking of upgrading and either puting a shift correction kit or a performance shift kit in and a beefed up sun gear. I'm not planning on racing the car, just trying to cruise and may stomp on it once in awhile. I may plan on building the engine up from 230 stock hp to atleast 300hp, are there any other upgrades to the trans. I should think about doing since I'm not racing it? Although I have rebuilt a couple of engines in the past this will be my first transmission rebuild. Also, is it ok to use royal purple synthetic in a rebuilt transmission and in a rear diff.?

Pete K

This link may be helpful.

http://www.corvette-guru.com/modules...=10612&forum=1

jmkvette

Thanks Pete, That answers alot of questions and now I don't need to buy a dvd. Your break down is superb! I will study it and make sure I do a top notch job and promise not to half *** it. I have another vehicle to drive so I have plenty of time and will take it slow. Thanks again for all your and everyone elses help.

Thanks Crzyfrlss1, I will deffinitelly double check the rear diff before I get started.

Kevman36

Not true rebuild kit is only 150
And pretty easy to do

Kevman36

Not true rebuild kit is only 150 and pretty easy to do

Cliff Harris

This thread might be helpful:

https://www.corvetteforum.com/forums...and-tools.html