Could you please tell me what the vacuum reading should be on a 78 vette. thanks.

10

Asked by Nov 10, 2015 at 09:41 PM about the 1978 Chevrolet Corvette Coupe

Question type: Maintenance & Repair

3 Answers

70,455

At idle a healthy car should run a steady 18 to 20". On the road it is purely dependent on the throttle position and engine load.

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72,415

They run at 17,18 inches vacuum at idle.

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10

Thanks guys

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