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

poppin in new gears. ANything im missing

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Old Feb 8, 2008 | 10:49 AM
  #1  
kowboy59's Avatar
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
poppin in new gears. ANything im missing

Okay I got a buddy doin my gears for me. I bought a rebuild kit for the rear end also. I was just curious as to if i need to do something.? I was reading about some sonnax spring tv cable adjuster? What does it actually do? I guess ima need a speedo adjustment. On my car how is it controlled?

Will the gears be at their best potential without adjusting things like that tv cable? I never heard of all that so it just confused me to no end.
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Old Feb 8, 2008 | 10:58 AM
  #2  
Burnout91's Avatar
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From: 4-22 / 7-25
Car: '91 Z28 L98 G92
Engine: Modded L98
Transmission: Modded 700R4
Axle/Gears: Modded 10-Bolt
Re: poppin in new gears. ANything im missing

If you have a cable-driven speedometer, you will need to change the speedo gears to match the gear ratio in the rear axle, at least to have an ~accurate speedometer reading. The TV cable should be set as usual (it's really a setting, not an adjustment), and you may need to re-calibrate the trans governor to get the shift points where you want them. Between re-calibrating the governor, and using the Sonnax spring, I have my shift points pretty close to where I want them.
Bill
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Old Feb 8, 2008 | 11:26 AM
  #3  
kowboy59's Avatar
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: poppin in new gears. ANything im missing

Okay well i tried loking for that sonnax spring. ANd I am dumbfounded on where to buy. I looked for links on the other thread i was on, but they are all old. DO you have a link where you got urs? And how do you do that governor deal?
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Old Feb 8, 2008 | 11:44 AM
  #4  
Burnout91's Avatar
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Joined: Jul 2006
Posts: 811
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From: 4-22 / 7-25
Car: '91 Z28 L98 G92
Engine: Modded L98
Transmission: Modded 700R4
Axle/Gears: Modded 10-Bolt
Re: poppin in new gears. ANything im missing

Try www.transmichigan.com , Sonnax is listed in the table of contents on the left-hand side of the page. B&M and TCI have governor re-cal kits (check Jeg's or Summit). You change weights and / or springs on the trans governor to change shift points. Drive the car with the new gears installed, you may not have to change the shift points. Gonna put a (ProBuilt modified TransGo) shift kit in there?
Bill
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Old Feb 8, 2008 | 11:57 AM
  #5  
kowboy59's Avatar
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: poppin in new gears. ANything im missing

im actually workin on gettin my transmission fully rebuilt.(income tax) im just gettin 3.70 gears for now and play with that and my HSR. Im just not sure if it is gonna be easier to buy a new tranny or get mine rebuilt and lose the car for a week
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Old Feb 8, 2008 | 12:06 PM
  #6  
Burnout91's Avatar
Senior Member
 
Joined: Jul 2006
Posts: 811
Likes: 2
From: 4-22 / 7-25
Car: '91 Z28 L98 G92
Engine: Modded L98
Transmission: Modded 700R4
Axle/Gears: Modded 10-Bolt
Re: poppin in new gears. ANything im missing

If you have a GOOD rebuilder, who will install someone else's kit / parts, I would have to recommend getting a rebuild kit from ProBuilt; or getting a rebuilt trans from them. I've heard good things about Raptor and GM Bowtie overdrives, but have personal experience w/ ProBuilt. Dana / ProBuilt rocks.
Bill
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Old Feb 9, 2008 | 01:14 AM
  #7  
kowboy59's Avatar
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Posts: 1,153
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From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
Re: poppin in new gears. ANything im missing

thats who i am going with actually. I need one quick too
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