Could you please tell me what the vacuum reading should be on a 78 vette. thanks.
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.
They run at 17,18 inches vacuum at idle.
Looking for a Used Corvette in your area?
CarGurus has 20,703 nationwide Corvette listings starting at $3,499.
Search Chevrolet Corvette Questions
Chevrolet Corvette Experts