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Topic: Next up..adjusting the 4 spd linkage..no I don't know what I'm doing

in Forum: C3 Driveline Components


Next up..adjusting the 4 spd linkage..no I don't know what I'm doing

Posted: 4/9/14 10:56pm Message 1 of 4
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Carson City, NV - USA
Joined: 12/4/2013
Posts: 239
Vette(s): Numbers matching 1972 350 4 speed, silver pewter body with blue interior
The thing don't like shifting...any kind of shifting. Engine off is resistant, engine running...same story. All gears. No grinding...just hard to push into the gates. Fluid level is up. It's not synchros....been there done that. So, I'll make up a linkage lock tool at the shop tomorrow. Can this be done with the trans in the car?

Thanks,
Dave


My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

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Re: Next up..adjusting the 4 spd linkage..no I don't know what I'm d

Posted: 4/10/14 5:17am Message 2 of 4
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Equinunk, PA - USA
Joined: 10/31/2007
Posts: 2471
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.
 
Ouch I made mine out of a piece of conduit strap. It was the exact width I needed. If your car is like mine, it's best to take the exaust OUT. I had mine on a lift where I could sit on a creeper and work at it. Get someone with small hands and LOTS of patience. It would be best to have a set of hands on top/in the vehicle to hold the guage in the slot, and have the other set under the car to adjust the linkage. It's a tedious job, but may be your ticket to smooth shifting. After changing the shifter and adjusting mine, I am a firm believer that the RE-BUILT 4 speed has something wrong in the syncro area. 1st gear is always a pain on start-up, but the others are smooth after that.  Go slow!



Re: Next up..adjusting the 4 spd linkage..no I don't know what I'm d

Posted: 4/10/14 5:17pm Message 3 of 4
Former Member
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Carson City, NV - USA
Joined: 12/4/2013
Posts: 239
Vette(s): Numbers matching 1972 350 4 speed, silver pewter body with blue interior
Didn't get to making the tool so thanks for the tip. That will save me some time. Guess I can enlist one of my kids to slip under there with me. More jackstands and bruised shoulder blades I guess.


My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

Re: Next up..adjusting the 4 spd linkage..no I don't know what I'm d

Posted: 4/10/14 8:20pm Message 4 of 4
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Joined: 2/22/2011
Posts: 110
Just to make sure you're clutch is properly disengaging, try this:

First thing is put the trans in neutral, with the  engine running, and your foot off the clutch.

Then, full depress the clutch pedal and wait for about 5 seconds.

Then, try to put the trans into reverse. 

If it grinds, then your clutch is not fully disengaging.  If it goes into reverse easily, then your clutch is working properly, and you probably a problem with the first gear synchros.



1973 BB 4-Speed Coupe Project Car
2009 Z06 Mostly Stock

in Forum: C3 Driveline Components


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