I want to use my phone with the google calender, but I don't want to upload all my contacts from my phone to google.

How can I achieve this?

I said in the contacts App under Settings that the App Synchronisation is off, but then I deleted some test-contacts online in Gmail and they were also deleted on my phone.

I also tried the App "Root Firewall" and forbin access to internet to the contacts app, but still, there was this sync going on.

How can I achieve this in CyanogenMod? In the standard Android 4.1 it worked fine: there was nothing synced.

Or do I need another contact app to achieve this?