Can a 3100 grand am motor be swapped into 2000 cavalier?

No, a 3100 Grand Am engine (a Buick 3.1L V6) cannot be directly swapped into a 2000 Cavalier without significant modifications, likely making it impractical. The Cavalier's chassis, engine bay, and mounting points are designed for smaller engines, typically the 2.2L Ecotec 4-cylinder or a smaller V6. The 3.1L V6 is considerably larger and heavier. You'd face challenges with:

* Engine bay clearance: The 3.1L is physically too large to fit without extensive modifications, possibly including cutting and welding the firewall and other body parts.

* Mounting points: The engine mounts wouldn't align, requiring custom fabrication.

* Transmission compatibility: The transmission from the Grand Am might not bolt up to the Cavalier's transmission bell housing.

* Wiring harness and computer: The engine's wiring harness and computer are incompatible with the Cavalier's system, requiring extensive rewiring and potentially a custom engine management system.

* Exhaust system: The exhaust system will need significant modification or replacement.

While technically *possible* with a massive amount of custom fabrication and engineering expertise, it's not a feasible swap for a typical automotive enthusiast or mechanic. The cost and effort involved would far outweigh the benefits. It would be much simpler and cheaper to find a suitable replacement engine for the Cavalier or swap in a different, more compatible engine.