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Old Dec 7, 2023 | 09:01 PM
  #41  
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Originally Posted by azreeal
I wasn't aware of a 7 vane. 700r4?
7 VANE was very early 700r4 and 200-4r I think till 86 or 87
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Old Dec 7, 2023 | 09:59 PM
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Originally Posted by FranksCustomTrans
7 VANE was very early 700r4 and 200-4r I think till 86 or 87
Correct!


Making them difficult to find in good condition.

I use them because they Flow a greater Volume of Oil (especially at High RPM) than a 10 or 13-Vane Rotor.
They work Best at higher Line-Pressures.

GM went from a 7-Vane Rotor to a 10 vane Rotor for better Line-Pressure Consistency (sacrificing Volume).
However at higher Line-Pressures, this "less frequent pulse" from the rotor is far less observed, just like anything where the velocity is increased.

So we get greater Volume and have greater Line Pressure (due to our greater Boost Valve Sizes and Firmer Springs)...
Win Win!!!


Last edited by vorteciroc; Dec 7, 2023 at 10:33 PM.
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Old Dec 11, 2023 | 01:05 PM
  #43  
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Originally Posted by FranksCustomTrans
The Manual is good but that not what this thread is about but rather the little tricks , tips mods techs have come up with that are not in any book at least as far as I know..
And the Manual has some issues, Such as it will tell you the Overun clutch is on and 1-2 in d3 2 or 1, It is not , Its only on in D3 3rd gear not in 1-2 manually or automatically.
T absolutely right my friend good tips in here an stop with a dilemma should or shouldn't remove the bath tub check ball
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Old Dec 13, 2023 | 10:43 AM
  #44  
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Sorry I am not sure if you are asking a question or a statement. It happens my auto correct messes things up to sometimes for me
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Old Dec 13, 2023 | 10:56 AM
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Just a opinion. When I block the 4th accum I block from channel side not accum side, While I agree its easier from accum side I find that its also less secure and the hole is even at times larger than the check ball and can leak. Plud the fact the presure coming from the 4TH clutch side can be much higher than the accumside of the hole, I feel I get a much more secure seal from the channel side. Also a note never block it then leave the accum piston in as you will also be blocking lube orifice tot he rear planet .
Just a thought
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Old Dec 13, 2023 | 12:58 PM
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I do the same when I do it with a check ball
I'd recommend for most guys that they do this with a setscrew.
Makes it easily removable should they ever desire. And a setscrew with some red loctite will seal 100% from either side.
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