Big Cam No Vacuum

mopowers said

Have you put a gauge on it? How much vacuum do you have at idle in gear? That camshaft you have isn't what I'd call "big." You may be able to get by with some very basic tuning and not even need an aux vacuum pump.

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I had a friend that runs Pro Stock do the tuning for me so i'm pretty sure he set it up to run the best over all. (he owns a shop that specializes in racing engines) Although he probably did not tune it to get the max vacuum. I checked the vacuum and it was about 15" at idol 600 RPM in gear) however it was not in gear.