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

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Old 08-05-2009, 07:58 AM   #1
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Join Date: Apr 2002
Location: New Jersey
Posts: 5
Car: 1982 Z/28
Engine: 350 4bbl
Transmission: TH350
Axle/Gears: 3.42 posi

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speedo gear selection/replacement

Hey guys,
Just trying to get my speedo working correctly. I have a 3.42 rear and a TH350 trans, stock size tires on an 82z. I don't know what gear is in the trans, but the speedo is overreading by quite a bit. Any guesstimate on how many teeth I need?

Thanks!

k27
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Old 08-05-2009, 08:49 AM   #2
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Join Date: Aug 1999
Location: Lawrence, KS
Posts: 16,255
Car: Met. Silver 85 IROC
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's

Classifieds Rating: (3)
Re: speedo gear selection/replacement

Quote:
Originally Posted by kamaroguy27 View Post
Just trying to get my speedo working correctly. I have a 3.42 rear and a TH350 trans, stock size tires on an 82z. I don't know what gear is in the trans, but the speedo is overreading by quite a bit. Any guesstimate on how many teeth I need?
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Old 08-05-2009, 08:49 AM
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1986, 342, gear, posi, replacement, replacment, speedo, speedometer, th350, transam
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