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Boost + Vacuum Modulate Tranny?

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Old Jan 25, 2005 | 02:21 PM
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Default Boost + Vacuum Modulate Tranny?

I have a Stage III 4L60E which has a vacuum modulated valve body- if I added boost to this setup- what would happen?

Is there any sort of regulator I would need inline to the transmission- how does this work?

Just brainstorming things here.
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Old Jan 25, 2005 | 02:34 PM
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Mine works great and Im running 10# boost. Tranny (4l60e) never shifted so good, getting the computer out of the line pressure business is the way to go.
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Old Jan 25, 2005 | 03:52 PM
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Time for a full manual 700-r4
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Old Jan 25, 2005 | 04:07 PM
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A check-valve in the vacuum line between the mani and the tranny is all you need.
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Old Jan 25, 2005 | 07:14 PM
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Thanks, that's basically all I needed to know.
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Old Jan 25, 2005 | 07:22 PM
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red ws6 99's Avatar
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You could put a check valve inline or put a relief valve to the atmosphere. FLP ships (at least they did when I bought mine) a relief valve (basically a check ball in a tee fitting). No issues with line pressure.

Gary
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