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Print in friendly format Send this term to a friend  TH2004R
Automatic Transmission - 4 Speed

1st Gear: 2.74
2nd Gear: 1.57
3rd Gear: 1.00
4th Gear: 0.67

Reverse: 2.06

- Used in production GM model...
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ConcreteMan Stick shift Problem with 1990 zr-1
Guru Newb
Columbus, Oho
2 Posts
Member since:
5/17 11:43



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The problem with my 1990 zr1 stick shift is that the lever pull up (for reverse backup) sometimes does not work. I noticed that the 1.5mm screw backs out frequently and needs to be screwed back in for the lever to work. My mechanic told me that this screw is set in a rubber piece which may be worn out. What can I do??
I was thinking about super gluing the screw into the rubber piece, or getting a 2mm screw as a replacement instead of the 1.5mm screw. Any other suggestions, I would truly appreciate.
Thanks,
rg
Posted on: 5/17 12:46
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Matatk Re: Stick shift Problem with 1990 zr-1
Webmaster
SW Chicago Burbs
21361 Posts
Member since:
2008/1/7 0:00



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Maybe try some loctite first?

Otherwise:

www.zfdoc.com

Foremost expert in these transmissions. He might have a solution.
Posted on: 5/17 20:09
_________________

1989 Corvette...custom 383 stroker, superrammed and cammed, built trans with PeteK 2800 stall. Mustang dyno results: 336 rwhp / 419 rwtq.
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CorvetteBob Re: Stick shift Problem with 1990 zr-1
Master Guru
912 Posts
Member since:
2008/10/19 18:34



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Quote:

Matatk wrote:
Maybe try some loctite first?

Otherwise:

www.zfdoc.com

Foremost expert in these transmissions. He might have a solution.


I agree with Mat. ZFdoc is the right guy to contact.
And welcome to the Gurus!
Posted on: 5/17 23:00
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User not responsible for mistakes/alterations created by the internet gremlins. All info is 100% correct when entered, and ALL jokes are pretty doggoned funny when they left here. It's true. Really.
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bogus Re: Stick shift Problem with 1990 zr-1
Grand Imperial Pooh-Bah
San Pedro, CA
20462 Posts
Member since:
2005/9/7 0:00



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Welcome!!!!

You need to be super careful when dealing with these transmission... one wrong move and you are looking at a $3500 rebuild...

ZFDoc is the expert... check with him on this.

And he is THE goto guy for rebuilds. I simply don't trust anyone else with the ZF6's. Short of ZF themselves, but Bill has developed some engineering improvements that are applied to the build.

It isn't cheap, but it is great.

Posted on: 5/20 17:53
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw

Education is the best tool to overcome irrational fear. - me

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ConcreteMan Re: Stick shift Problem with 1990 zr-1
Guru Newb
Columbus, Oho
2 Posts
Member since:
5/17 11:43



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Thanks to all of you. I'll try to purchase another from dfdoc.
Sincerely,
rg
Posted on: 5/22 12:11
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-=Jeff=- Re: Stick shift Problem with 1990 zr-1
Master Guru
Bartlett, IL
572 Posts
Member since:
2007/12/20 0:00



Offline
The reverse lockout ring is probably cracked (it is plastic) I would try replacing that first as that sounds like your issue
Posted on: 6/25 14:09
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-=Jeff=-
1990 Corvette ZR-1 #1051
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