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10/5/08 9:24am - Original Message: 'What's Required to Remove 4 Sp Manual Transmission'
jp75vette
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199
My 4 speed manual does not shift into 3rd gear, so around Thanksgiving I will park it for the winter and put it on jack stands. I want to remove the transmission and rebuild it during the winter. What is required to remove the transmission? Adams' Apple2009-11-29 21:53:48
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10/5/08 10:19am - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
rick d
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williamston, NC - USA

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1969 coupe, 350, m22 trans, ac, black on black,

Joined: 1/19/2006
Posts: 353
 not too hard to remove, general hand tools , a transmission jack or a good roller jack, if you are gonna replace the clutch assembly you will need a clutch alignment tool.You will need an extra set of hands and about a case of budlite,,make sure you take note of how it comes apart, and the set up of your shifter linkage, the members here will walk you thru it,, good luck rd

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10/5/08 11:13am - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
stingrayjim jr Lifetime Member
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SHELBYVILLE, TN - USA

Vette(s):
1976 L48 auto

1978 L82 4speed

1994 LT1 6speed

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basically as rick said... its not tooo overly complicated, basically you'll have to remove the driveshaft(trust me on that, tried leavinig the differential end attached, not enough room to manuever the tranny out with it in, UNLESS you have a bolt in transmission crossmember, then its a breeze), the shifter(after taking the tranny mount you can drop the tranny down a little to get to the side of the shifter to take it off, then take the linkages off), the tranny mount, and it would be eaiser to to take the 4 bolts holding the transmission to the bell housing then slide out the tranny to the rear then nose dive out the front. Bellhousing is pretty straightforward at this point. As Rick said, do take note(or even pictures with a digi cam) for the shifter linkage mainly.  good luck, and when time comes we can walk you through it.

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10/6/08 10:19am - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
VetteSpecialties
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Mounds View, MN - USA

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And, as has been repeated many times on this forum, the AIM has great diagrams.

Larry


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2/7/09 1:13pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
jp75vette
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199
Transmission is removed, thanks for the tips. The rebuild kit is in and now waiting for warmer weather to put it back. First have to get new tunnel insulation in place. Also have to rivet in new clips as they are all gone.

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4/26/09 2:38pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
jp75vette
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199
Ok , I rebuilt the transmission over the winter, new bearings and syncros and sliders. Transmission is back in and the good news is that  I now have 3rd gear back. In the past I could never shift into 3rd gear.  I have a temporary eBay CPlus shifter in as the original went to Hurst for rebuild, but that takes 8 weeks.
The issue is that there is some kind of ticking noise near the bell housing. I drove the car around the block and all gears work OK, but there is a ticking noise. The noise is also there when the car is stopped and running in neutral and also with the clutch in.
The car is back on stands as now I need to find out where the ticking comes from.
Anyone have any ideas?


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7/25/09 8:17pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
OH6A Lifetime Member
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Cadiz, KY - USA

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64 Convertible 73 Coupe 74 Convertible 63 Corvair Spyder Convertible

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Hopefully you replaced the clutch, pressure plate, release bearing, pilot bearing/bushing and resurfaced the flywheel.  If you did jot do all suggested, the ticking is will be solved when you remove the transmission and accomplish all of the above.  Good luck. OH6A2009-07-25 18:18:43

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7/26/09 8:54am - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
jp75vette
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199

I replaced the clutch, pressure plate, pilot bearing and resurfcd the flywheel.

 
The transmission did shift into 3rd for a wile and now does not. I am not sure if the alignment is OK or not. I also have a vibration at 2500-3550 and it;s likely clutch related. It's a real pain.
 
No time to work on it as I'm in China for 5 weeks now. Car is on jacks to get the brakes redone when I get home.
 
Always projects on these C3's; but that is part of the enjoyment.
 
Right now I'm happy having 3 of the 4 gears.


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7/31/09 10:56pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
rick jay Gold Member
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Liverpool, NY - USA

Vette(s):
72 coupe, 350 4 spd, modified motor, exhaust, tires & wheels. '91 ZR1, modified exhaust.

Joined: 1/21/2003
Posts: 82
Don't take this the wrong way, but what kind of clutch is it and which way did you install it? From what you wrote in, it sounds like you covered everything else. Vibration? That's gotta be something not balanced or misalligned. Could the end of the trans shaft be too long and pressing against the crank? When the flywheel was resurfaced, did they also check it for balance?
Good luck.
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11/26/09 12:11pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
jp75vette
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199
Finally solved the mystery of no 3rd gear. I adjusted the travel of the rod by two turns and now I have third gear.

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11/26/09 10:05pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
bio11
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Oklahoma City, OK - USA

Vette(s):
1972 LS5 Convertible,Auto.Targa Blue with Black Interior.

Joined: 4/1/2007
Posts: 432
Did you solve the ticking problem? Just curious.

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11/26/09 10:14pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
jp75vette
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199
I'm not sure if I solved the 'ticking' problem. It is intermittent. I am suspecting that it is the parking brake cable vibrating on the exhaust. It's one of those things on the 'to do list' still.

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11/27/09 8:11am - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
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I don't know how I missed this one! Embarrassed
Glad ya got it handled, tho.
One thing I would check, as far as the "ticking" noise....check to see that your distributor cap is fully seated on the distributor. Lot of times, when the trans is removed, the engine may hang down far enough for the dist. cap to bump/rub up against the firewall or wiper motor, knocking it a little off center. When you fire it up, the rotor will hit in the wrong places, and "tick" every revolution. Just a thought.


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Joel Adams
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11/29/09 10:55am - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
tuxblacray Lifetime Member
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Greensburg, IN - USA

Vette(s):
Previous: 1984 Silver / Charcoal Coupe, 1988 Maroon Coupe / 1989 Artic White / Mod. Red Int. Coupe, Present:1976 Stingray Black / Black, Auto, 350 slightly modified (355 hp) Luxor Wires Redline Tires. / 2001 Speedway White Vert, Torch Red Int, LS1, Auto.

Joined: 9/24/2003
Posts: 5174
Brudder Joel I wudda never thought of that. I mightta strained for it on a Auto Tranny but wudda overlooked it on a speeder.

Ah guess dats why ya makes da BIG $$$! You Da Man...

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11/29/09 5:15pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1956
Joel, do you work in the automotive business??

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11/29/09 11:51pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19460
[QUOTE=dskopp]Joel, do you work in the automotive business??[/QUOTE]

Whatever gave you that idea?Confused
Actually, I'm a book-keeper in a whore-house....(can I say that here?)

Naw...really...I've been in da arotomobile repair business for....EVER....Dead I been doing trans-a-missions for aboot 30 years now, and tinker with the rest of it...


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Joel Adams
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1/6/10 4:42pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
motor1
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Joined: 1/6/2010
Posts: 2
I just put together a basket  job 1978 4 speed  road tested it and it seems the trans is noisy in all gears except 4th. Is this normal or?
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1/6/10 11:12pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19460
No! A 4 speed that makes noise in all gears BUT 4th has a bad bearing, or a damaged countershaft and/or input shaft.
It really depends on what kind of noise we're talking about.
Grind-growl-howl-squeal-squeek-,etc.

The one exception to this would be the Muncie M-22...nicknamed the Rockcrusher for the noise it makes...


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Adams' Apple2010-01-06 21:15:50

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Joel Adams
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1/6/10 11:38pm - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
motor1
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Joined: 1/6/2010
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It's a howling noise, and is completely gone when I shift into 4th.
Thanks for your input,
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1/7/10 8:09am - Reply: 'What's Required to Remove 4 Sp Manual Transmission'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19460
Well...that's not good!
That will be one of two things...neither of which is fun. You may have a bad rear bearing on the mainshaft, or....more likely, the needle/roller bearings(all 100 or so of them) inside the cluster gear are bad, which would also make the cluster shaft bad.
To explain, the cluster gear is hollow, and has a shaft that runs thru it, called the cluster shaft. To keep the shaft and gear from rubbing, and wearing, there are a series of needle bearings around the shaft, that roll against the cluster gear. These bearings are basically free-floating, and have to be inserted individually into the cluster gear, and then the gear installed into the trans case, then the cluster shaft is inserted thru the case and the cluster gear.
When these bearings, or the shaft itself wears(over time, or due to rust), it allows the main gears and the cluster gear to separate and not run where they should, which increases the clearance between the gears. This is what makes the noise. The rear bearing on the mainshaft, if worn, will cause the same noise, since that also allows too much clearance between the gear sets.
The reason the noise goes away in 4th gear is due to 4th gear being "direct drive", meaning it is a straight shot from engine to differential, with no gear reduction. This keeps any pressure off of the cluster, so there's no noise when in 4th.
If you have a noise like this in all gears, it could be the input(front) bearing, since it has pressure in all gears.
Sorry to say, but your noise isn't going to go away...the trans need repairs... You might be able to drive it like this for a long time, and not have any problems, BUT....the damage will get worse, and more parts will be damaged...

One other thought...if the gear surface of either the input shaft, or the cluster gear is damaged(teeth broken, severe rust, etc.), it could cause a noise in all gears but 4th, also. Gear damage like that, however, usually is more of a grinding, clunky noise. The trans is still in need of repair, either way, imo.
Adams' Apple2010-01-07 06:16:22

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Joel Adams
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