Speedo cable leak at turbo 350 - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

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post #1 of 5 (permalink) Old Feb 20th, 09, 2:21 PM Thread Starter
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Speedo cable leak at turbo 350

I have a tranny fluid leak at the speedo cable where it threads into the tranny, does this have a o ring some place that may need replaced.The connection where the cable goes into the tranny is tight i cant think of what the fix is.Please advise as to who has been there done that, many thanks for the help.


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post #2 of 5 (permalink) Old Feb 20th, 09, 2:25 PM
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Re: Speedo cable leak at turbo 350

I think there is a o ring in it, I know my 4 speed speedo cable had one.

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post #3 of 5 (permalink) Old Feb 20th, 09, 2:29 PM
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Re: Speedo cable leak at turbo 350

Remove the speedometer gear housing (bullet) and there should be an o-ring on the outside ,pull the gear out and there may be another inside.
Replacing both should cure the leak.

Last edited by Mike; Feb 20th, 09 at 5:06 PM.
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post #4 of 5 (permalink) Old Feb 20th, 09, 2:32 PM
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Re: Speedo cable leak at turbo 350

there is a small bolt and a kinda metal retainer tab that hold the speedo bullet in the tranny (the end of the cable with the speedo drive gear). ther eis an o ring on that bullet. it will leak if that o ring is bad.

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post #5 of 5 (permalink) Old Feb 22nd, 09, 10:27 PM
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Re: Speedo cable leak at turbo 350

There's a little seal inside of that gear drive housing, those will make a nice mess if they need to be replaced. My 70 Monte was leaking there, couldn't find the right seal so I bought the whole assembly from the dealer. It comes with a seal in it, no more leaks.

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