C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Jun 27, 2020 | 07:02 PM
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Here’s a nice adjustable vacuum switch, I’m using the factory vacuum switch but this would allow much more tune ability

https://superiortransmission.com/product/superior-k052/
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Old Jun 27, 2020 | 07:41 PM
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And what about the vacuum source?
Originally is on ported, that would mean that during driving each time I move my leg from gas pedal it will go off (actually, there should be vacuum delay valve to dampen it for short period of time)
But why not to use manifold vacuum? The difference is only that vacuum switch will be on also during idle.
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Old Jun 27, 2020 | 07:51 PM
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Originally Posted by Corto
And what about the vacuum source?
Originally is on ported, that would mean that during driving each time I move my leg from gas pedal it will go off (actually, there should be vacuum delay valve to dampen it for short period of time)
But why not to use manifold vacuum? The difference is only that vacuum switch will be on also during idle.
the factory vacuum switch only turns “ON” when vacuum is between 2 to 7 inches so it would be off at idle with full vacuum too
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