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A little shifty

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Old Aug 11, 2024 | 05:31 PM
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Default A little shifty

All off a sudden this 4 speed is hard to get in gear at stop or on a roll only does it some times. 77 car 77000 miles
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Old Aug 11, 2024 | 11:35 PM
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Clutch adjustment needed maybe.....see if it goes in easy with the engine off.
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Old Aug 12, 2024 | 05:24 AM
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Not being there to experience the issue. The first thought is clutch adjustment as above.
If that doesn't solve the issue. Perhaps you have a warped plate or out of true flywheel.
The fact that it's only sometimes lends one to believe it's not in the gear box proper.
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Old Aug 12, 2024 | 08:13 AM
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If the clutch adjustment doesn't fix it, perhaps check that the shift linkages are still tight. Mine were loose when I bought the car.
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Old Aug 12, 2024 | 09:49 AM
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OKAY Thanks
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Old Aug 12, 2024 | 09:50 AM
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Thanks for the reply!
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Old Aug 12, 2024 | 12:29 PM
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Shifts with engine not running
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Old Aug 12, 2024 | 01:23 PM
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Is this just a 1st gear problem or is it difficult to get into 2nd/3rd/4th from a stop?
Is it grinding or just won't go forward into the "slot"?
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Old Aug 12, 2024 | 04:19 PM
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Originally Posted by signify
Shifts with engine not running
If that's the case then it likely just needs the clutch adjusted. Do you know how to do that?
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Old Aug 12, 2024 | 04:22 PM
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also check the fluid..after adjustment.
check for loose bolts on shifter/ linkage too..

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Old Aug 12, 2024 | 04:50 PM
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All of the above 67;72
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Old Aug 12, 2024 | 04:52 PM
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Will try the clutch adjustment Thanks
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Old Aug 12, 2024 | 10:05 PM
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Originally Posted by 67:72
Is this just a 1st gear problem or is it difficult to get into 2nd/3rd/4th from a stop?
Is it grinding or just won't go forward into the "slot"?
Originally Posted by signify
All of the above 67;72
Not sure what "all of the above" means...
The reason I ask is that if it's difficult to get into all gears from a stop, you likely have misadjusted clutch linkage.
If it's grinding at all, that would seem to indicate synchronizer ring problems.
If it's just difficult to get into first gear slot (with no grinding happening), then perhaps a shifter adjustment for the #1 linkage.
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Old Aug 13, 2024 | 09:14 AM
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This is what happens when you first back up and go into reverse it goes in to gear with no problem. When you stop and are in 4th gear and go to first you can only find first going into reverse and then it grinds.As you shift thru the gears it is a challenge because it is though you have to double clutch.to catch a gear. Note in the car engine off it will shift with clutch in threw all gears except reverse which you have to wobble shifter
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Old Aug 13, 2024 | 02:09 PM
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Originally Posted by signify
This is what happens when you first back up and go into reverse it goes in to gear with no problem. When you stop and are in 4th gear and go to first you can only find first going into reverse and then it grinds.As you shift thru the gears it is a challenge because it is though you have to double clutch.to catch a gear. Note in the car engine off it will shift with clutch in threw all gears except reverse which you have to wobble shifter
Any grinding going into a forward gear would indicate to me that the synchronizing rings are worn. If it's just really difficult (no grinding) to go into any forward gear the clutch likely isn't releasing entirely. Reverse is a different beast; it has no synchro ring, so it can grind on occasion or just be difficult to engage.

If you don't have any grinding going into forward gears, do the clutch adjustment and re-align the shifter linkage.
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Old Aug 13, 2024 | 02:54 PM
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Thanks have one inch play now doing same thing
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Old Aug 15, 2024 | 11:25 AM
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If you've made a clutch adjustment (referring to your statement " have one inch of play now")...... I'd first have a close look at all the clutch linkages, looking for anything odd or bent, and then get a helper to cycle the clutch and see if anything is bending or moving in a non-linear fashion. Pay particular attention to the Z-link and the attachment to the frame and engine block...if anything is loose there you'll lose travel to the clutch.
Here's a Pic of what it should look like from my '77AIM.....
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Corvette clutch linkage.pdf (606.0 KB, 133 views)
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Old Aug 16, 2024 | 09:13 AM
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Thanks! What is the Zlink?
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Old Aug 16, 2024 | 10:40 AM
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Originally Posted by signify
Thanks! What is the Zlink?


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Old Aug 17, 2024 | 07:52 PM
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Thanks! Ran the car today for a hour and sifted okay but felt like i could use some more lard in gear box. Not smooth as it should be any suggestions or does shifter need rebuild or would a new hurst improve the situation? How long is the tranny lube good for?
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