excessive? So we have this 1999 Cadillac Seville STS. I took the engine cover cap off to reveal the motor and when its started it has noticeable movement. It's not a lot, but you can tell. Is this normal? My 2004 Monte Carlo SS supercharged doesn't shake really at all in comparison and neither does our 2000 Chrysler 300M. I was just curious if anyone that has experience with the Northstar V8 could tell me about this? Could it just be the engine mounts or is there anything else it could be? Now that I think about it, it probably shakes about as much as our 3400 in the Pontiac Aztek.