Hey all, new here. I have a 95 Riviera S/C - 3800 Series I. It has 128K, experiencing a really rough idle condition (shuddering, shaking) when the car warms up. It seems to get close to stalling out at stop lights, but it hasn't happened just yet. So far I have changed the following: spark...

I have a 98 monte carlo z34 with a 3800. Am I able to swap out engines out of a 98 riviera supercharged? I can get the whole car, but just wanted it for the engine and transmission.

97 White Buick Riviera 120,000K The car has its fair share of problems but would be perfect for parts. Trans/Engine/Supercharger work fine. I have a bike that I use mainly for transporation so the car isn't driven that much anymore but has made it anywhere I needed it to go, however I need to...