340 Engine Shake

plumkrazee70 said
This may be a little off topic. He also tested the vacuum with a guage and it's spot on with Fitech 10-11in.

Would you expect the vacuum to be that low with this cam? I swear when I talked to lunati on a cam recommendation, they said this one would have good vacuum with the setup I have.

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For that cam 10-11 inches is pretty much normal
I would be more concerned if the vacuum reading was bouncing around like when your shaking starts.
I have had performance engines that performed and idled well with 5 inches of vacuum.