C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Th700 trans has 1st, reverse only

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Old May 28, 2017 | 05:24 PM
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Default Th700 trans has 1st, reverse only

Changed over to carb 85 TPI. Transmission worked fine before change. Now it has problem. TV cable is adjusted fine. Any ideas?
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Old May 28, 2017 | 07:02 PM
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Originally Posted by Chapp
Changed over to carb 85 TPI. Transmission worked fine before change. Now it has problem. TV cable is adjusted fine. Any ideas?
Hi

Is the trans fluid level ok? could be low trans fluid, governor gear stripped or trans problem..

The governor can fail and prevent the transmission from shifting, it is on the drivers side of the transmission has a black rounded dome with circlip retainer and can be serviced with trans in the car.

The gear can strip causing the trans to not shift out of first gear.

See link below to you tube video of governor replacement.


Last edited by gerardvg; May 28, 2017 at 07:15 PM.
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Old Aug 12, 2022 | 11:16 PM
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Thank you all for your thoughtful replies. Tomorrow I am going to try a few tests. I have ordered a pressure gauge set and will check the pressures versus the troubleshooting guide in the shop manual when I get the gauge. I'll let you all know what I find once I figure it out.

Thanks again.
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