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May 24, 2013, 4:40pm

Bowtieguy's 73-87 Chevy Truck Stop :: General Talk :: 73-87 Truck Transmissions :: TURBO 400 LEAKS

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Topic: TURBO 400 LEAKS (Read 1,161 times)

tcrush
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TURBO 400 LEAKS
« Thread Started on Jul 28, 2005, 2:28pm »

MY TURBO 400 LEAKS RIGHT WHERE THE SPEEDOMETER CABLE GOES INTO THE TAIL SHAFT.IT LEAKS PRETTY GOOD.DOES ANYONE KNOW IF THEIR IS SOME KIND OF SEAL OR SOMETHING TO REPLACE.MAYBE ITS LEAKING AROUND THE THREADS THAT THE SPEEDOMETER SCREWS ON TO?

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19_Chevelle_69
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Re: TURBO 400 LEAKS
« Reply #1 on Jul 28, 2005, 8:26pm »

There is an O ring around the "bullet" that pushes into the tranny. There is also a lip seal inside the bullet that seals against the plastic drive gear. Either, or both of these are likely to leak.

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Don
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mightyy
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Re: TURBO 400 LEAKS
« Reply #2 on Jul 28, 2005, 9:40pm »

I also had a leaky turbo 400. it has been a few years since I went into vapor lock because I could not completely locate all of the leaks. I did the speedo o rings and and a several attempts at the pan gasket. I threw out a perfectly good chrome pan, thinking it was the cause. I ended up replacing a seal where the shift rod exits the trans. Wha-La that dried it up real nice. the only bummer is that you have to do this from inside. hopefully its only your speedo seals! An easy, fast, and cheap repair.

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tcrush
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Re: TURBO 400 LEAKS
« Reply #3 on Jul 29, 2005, 9:48am »

THANK YOU GUYS FOR THE HELP.THIS WILL BE MY WEEKEND PROJECT.I HOPE ITS A QUICK AND EASY FIX.I WILL LET YOU KNOW WHAT HAPPENS.THANKS

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Bent
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Re: TURBO 400 LEAKS
« Reply #4 on Jul 30, 2005, 12:58am »

my tranny leak was a quick and easy fix, and it still leaks.

« Last Edit: Jul 30, 2005, 12:59am by Bent »

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Pontiac1976
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Re: TURBO 400 LEAKS
« Reply #5 on Aug 1, 2005, 7:37pm »

TIP : Make sure the top Vent is not PLUGED ,there is vent
( tube or cap ) on the top back of the Trans.
If it is pluged it can cause leakes to and will star at the old and weak spots first.

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tcrush
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Re: TURBO 400 LEAKS
« Reply #6 on Aug 2, 2005, 2:25pm »

I WILL CHECK THE VENT TUBE.I JUST CHANGED THE FLUID AND FILTER LAST NIGHT.I HAVE A NEW PAN GASKET SO THAT LEAK IS FIXED.I STILL NEED TO FIX THE LEAK AT THE SPEEDO CABLE.DOES ANYONE KNOW IF THE FILTER IN A TURBO 400 KIND OF FLOATS.I MEAN THAT THE BOLT THAT HOLDS THE FILTER ON CAN ONLY GO SO TIGHT BY THE WAY THE BOLT IS MADE.THE FILTER SEEMED TO SIT LEVEL BUT IT KIND OF MOVES AROUND.THIS IS MY FIRST TURBO 400,SO I'VE GOT SOME THINGS TO LEARN.

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