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Old 05-29-2003, 01:15 PM
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Post turbo 350

I have a turbo 350 out of a 69 camaro,the problem
is i had it rebuilt twice.The first time the guy
rebuilt it, it shifted very hard but once the tranny would warm up,or under hard use it would
bypass tranny fluid out of the vent tube on top
trans case.the guy tried to rebuild it agin but had the same problem.I got my money back and the tranny has all new parts in it.I have another project and would like to use the tranny if i could find out how to cure the problem.

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Old 05-29-2003, 04:14 PM
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The vent tube on the top, is just that, a vent. There is no way for the fluid to be bypassed to it. I would question the fluid level being too high. The level should be at about the top of the pan at operating temp. You may have the wrong dip stick, or tube, giving the wrong fluid level reading.
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Old 05-31-2003, 06:03 AM
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I would check the filler tube and dip stick too.

Also, the early T-350 pumps had a valve in them called a "primer valve".

If this valve is real loose in it's bore or If the bore is not properly plugged after the valve is removed the oil can get past this area and into the vent passages in the pump & stator.

The tranny will then leak out the vent.

the valve is un-needed, GM removed it from the pump design
Dont worry how old you are... it is the mileage on your body that adds up.
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