Do worn bearings = Emergency Replacement?
Thread Starter
Racer
Joined: Oct 2007
Posts: 270
Likes: 0
From: Chapel Hill NC
Do worn bearings = Emergency Replacement?
1981, 4 speed manual, Muncie transmission.
I had it checked today and my bearings are worn.
No leaks, runs fine. (does make noise when in nuetral and clutch pedal not pressed down)
Is this a "must replace immediately" repair, or can I wait a while before I have the transmission rebuilt?
Cottman quoted: $1200 - $1400 for the rebuild (if there are no unexpected surprises).
I had it checked today and my bearings are worn.
No leaks, runs fine. (does make noise when in nuetral and clutch pedal not pressed down)
Is this a "must replace immediately" repair, or can I wait a while before I have the transmission rebuilt?
Cottman quoted: $1200 - $1400 for the rebuild (if there are no unexpected surprises).
Drifting
Joined: Feb 2005
Posts: 1,438
Likes: 2
From: Melrose Florida
From the limited information:
Sounds like your throwout bearing is worn, causing the noises. Yes, this can fail, and leave you stranded. No, >$1000 is not a good price.
They are MAYBE talking about a transmission rebuild, but probably not. RU sure it's a Muncie...thought the 'Vette was back to Saginaw from '74-on.
Steve
Sounds like your throwout bearing is worn, causing the noises. Yes, this can fail, and leave you stranded. No, >$1000 is not a good price.
They are MAYBE talking about a transmission rebuild, but probably not. RU sure it's a Muncie...thought the 'Vette was back to Saginaw from '74-on.
Steve
Drifting
Joined: Feb 2008
Posts: 1,560
Likes: 4
From: Arlington texas
It should be a muncie. My 78 has a muncie close ratio also. As far as the cost of the rebuild, I haven't priced it yet but that's about what I was expecting it to be. I'm thinking very seriously about just removing it and replacing it with a 5 or 6 speed. The gas mileage sucks with the 4 speed plus I just don't believe that it is the best thing for the engines to always rev so high on the highway.
Last edited by milo30; Jun 2, 2008 at 02:31 PM.
Burning Brakes
Joined: Feb 2004
Posts: 758
Likes: 14
From: Ville de la Baie Quebec. A winner is just a loser who tried again.
I just rebuilt a Muncie from a friends camaro, we replaced the back up gear and bearings, Lets put it this way,,, I would rebuild them anytime for that price, If you have any mechanical nowhow you can do it yourself. the parts are not expensive.
Drifting
Joined: Aug 2007
Posts: 1,924
Likes: 6
Unless my research is wrong, the last year for Muncie in a GM vehicle was 1974
I would think all you guys (like my 4 speed) is a Borg Warner
see:
http://www3.sympatico.ca/atkinsom/history.html
I would think all you guys (like my 4 speed) is a Borg Warner
see:
http://www3.sympatico.ca/atkinsom/history.html
Thread Starter
Racer
Joined: Oct 2007
Posts: 270
Likes: 0
From: Chapel Hill NC
Is my issue with my clutch, not the transmission?
I have spoken with a half dozen shops at this point... and a throw-out bearing seems to be the answer I get from most shops. (a whirling noise when the clutch pedal is NOT depressed) This, as I understand it, is a clutch issue and would not require a transmission rebuild.
So I guess I will start there first, as my local shop can replace the clutch.
Now, the only question is do I have a 10 spline or a 26? Anybody know how to figure that one out without opening it up?
So I guess I will start there first, as my local shop can replace the clutch.
Now, the only question is do I have a 10 spline or a 26? Anybody know how to figure that one out without opening it up?
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Drifting
Joined: Aug 2007
Posts: 1,924
Likes: 6
I have spoken with a half dozen shops at this point... and a throw-out bearing seems to be the answer I get from most shops. (a whirling noise when the clutch pedal is NOT depressed) This, as I understand it, is a clutch issue and would not require a transmission rebuild.
So I guess I will start there first, as my local shop can replace the clutch.
Now, the only question is do I have a 10 spline or a 26? Anybody know how to figure that one out without opening it up?
So I guess I will start there first, as my local shop can replace the clutch.
Now, the only question is do I have a 10 spline or a 26? Anybody know how to figure that one out without opening it up?
Last edited by pbcanney; Jun 2, 2008 at 04:00 PM.
Melting Slicks
Joined: Sep 2004
Posts: 3,223
Likes: 666
From: Northeast
You need to crawl under there and get numbers for the guy. The first site tells what trans came in that year:
http://www.corvette-world.com/corvet...on%20Codes.php
The second site is the BW site where you can find the numbers. Vertical on the drivers side will give you the w number and additional info. I dont think anyone can give any answers since the trans might have been changed. Need to find out what is there. IMHO
http://fiedlerh.home.att.net/BW.htm
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
A throw-out bearing is not a tough fix, if you have basic tools, are under cover and can get the car in the air a couple of feet. Drop the driveshaft, remove the tranny, change the bearing, reinstall.
Drifting
Joined: Feb 2008
Posts: 1,560
Likes: 4
From: Arlington texas
Unless my research is wrong, the last year for Muncie in a GM vehicle was 1974
I would think all you guys (like my 4 speed) is a Borg Warner
see:
http://www3.sympatico.ca/atkinsom/history.html
I would think all you guys (like my 4 speed) is a Borg Warner
see:
http://www3.sympatico.ca/atkinsom/history.html
So what does it have? I'll have to look when I get back home. I assumed that GM listed it with the M21 so therefore it was a Muncie. If your info is right, I guess they could have just left the M21 code for a 4sp. I did see a couple of sites that said GM dropped it from everything but the vette but there was nothing there to verify that on their site.
Now you're gonna make me get dirty to find out!
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B2Z Silver Anniversary Paint (Includes sport striping and two-tone paint treatment) $399 15,283
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MM4 4-spd, Wide Ratio Manual Transmission $0.00 4,773
MX1 Automatic Transmission $0.00 38,614
NA2 Standard Emissions Equipment
Drifting
Joined: Aug 2007
Posts: 1,924
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