Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Sometimes...When I try to go into reverse...

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Old Nov 27, 2012 | 09:59 PM
  #1  
Chuck84TA's Avatar
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From: Woodstock, IL
Car: 1984 Trans Am Recaro Edition
Engine: 355 L98 Vortec 226/234 custom cam
Transmission: TKO-600
Axle/Gears: On borrowed time...
Sometimes...When I try to go into reverse...

It grinds... Big time... So bad that I usually keep the car in reverse when the engine is shut down, that way it isn't a problem. Is this a tranny or clutch issue? What should I do about this?

If I need a new tranny then I would try something more beefed up to be able to handle a future 350/383/400.

Chuck
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Old Nov 27, 2012 | 10:57 PM
  #2  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Sometimes...When I try to go into reverse...

Typically the clutch not fully disengaging
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Old Nov 28, 2012 | 01:16 AM
  #3  
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From: Oxnard, CALI
Car: 1984 Z28
Engine: 5.0 L (Carbed)
Transmission: 5-Speed
Axle/Gears: Lazy 2 check
Re: Sometimes...When I try to go into reverse...

ye man its most likely gonna be the clutch im having the same problem with mine it's not that bad as your form the sound of it....Some of they guys here taught me a lil trick..i trow it into 5th gear while the car is on then into reverse works omst of the times...hoepfully it helps your situation.
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Old Nov 28, 2012 | 07:55 AM
  #4  
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Car: 85 Trans Am
Engine: 98 Vortec 350 LT1 Cam w/ TPI
Transmission: T56
Axle/Gears: 9 bolt 3:27
Re: Sometimes...When I try to go into reverse...

This is common for non synchronized reverse. There could possibly be a problem with the clutch but even if the clutch is working properly it will still do it if you go to reverse too fast.

A good way to test proper clutch function is let the car idle in neutral and when you put the clutch in and hold it there for at least 5 seconds. After 5 seconds try to go to reverse. After 5 seconds if everything is working properly the gears should be stopped in the trans and it should not grind. If it still grinds after 5 seconds then it is possible the clutch is not fully releasing.

calgutie is right in that as long as the clutch is working properly the trick is to hit any of the forward gears first and then reverse. Hitting the forward gear will stop the gears from spinning and allow you to get reverse without grinding.
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Old Nov 28, 2012 | 07:57 AM
  #5  
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Re: Sometimes...When I try to go into reverse...

And once you've learned how to drive it correctly, change the fluid IMMEDIATELY, so that all the metal chips that have been shedding into the fluid off of the gears as they've been getting DESTROYED, are flushed out of it as much as possible and do as little further damage to the rest of the transmission as possible.
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Old Nov 28, 2012 | 03:01 PM
  #6  
Chuck84TA's Avatar
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Joined: May 2012
Posts: 582
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From: Woodstock, IL
Car: 1984 Trans Am Recaro Edition
Engine: 355 L98 Vortec 226/234 custom cam
Transmission: TKO-600
Axle/Gears: On borrowed time...
Re: Sometimes...When I try to go into reverse...

Thanks for the heads up guys! I will also change out the Tranny fluid also!

Chuck
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Old Nov 28, 2012 | 03:41 PM
  #7  
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: Sometimes...When I try to go into reverse...

Originally Posted by LilSki
This is common for non synchronized reverse. There could possibly be a problem with the clutch but even if the clutch is working properly it will still do it if you go to reverse too fast.

A good way to test proper clutch function is let the car idle in neutral and when you put the clutch in and hold it there for at least 5 seconds. After 5 seconds try to go to reverse. After 5 seconds if everything is working properly the gears should be stopped in the trans and it should not grind. If it still grinds after 5 seconds then it is possible the clutch is not fully releasing.



Originally Posted by jmd
Reverse is not synchronized so that's normal.

<snip>

But if going into another gear, then first prevents it from happening, you still don't have a "must rebuild" situation
https://www.thirdgen.org/forums/post...33-post19.html
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