Does the engine have to come out change flywheel on a1998 Monte Carlo has 3.8?
No, the engine does *not* have to come out to change the flywheel on a 1998 Monte Carlo with a 3.8L engine. While it's a challenging job requiring significant mechanical skill and the right tools, it's generally doable from underneath the car. You'll need to support the engine properly, disconnect various components (transmission, etc.), and have access to a transmission jack.