Thread: M40 adjustments
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Old 07-28-2009, 01:42 AM
Hotrodpaul Hotrodpaul is online now
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Default Re: M40 adjustments

I believe the TH400 uses a vacuum modulator to vary line pressure based on engine vacuum. There are adjustable modulators available that allow the driver to vary the line pressure with the turn of a wrench. The modulator is mounted on the passenger side of the tranny and has a steel line going to the intake manifold vacuum fitting.

Paul
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