A 3.1L V6 is a relatively common engine size, and the 1995 Oldsmobile Cutlass Supreme SL likely came with a V6 engine as an option. Therefore, *replacing* a 3.1L with another 3.1L would be straightforward (barring any unusual damage).
However, if you're talking about a different type of 3.1L engine (e.g., from a different make and model of car) or a significantly modified 3.1L, it might not fit without significant modifications. You'd need to consider:
* Engine bay dimensions: The physical size of the engine block, including accessories like the alternator, power steering pump, and intake manifold. There might be clearance issues with the firewall, body panels, or other components.
* Mounts: The engine mounts would likely need to be modified or replaced to accommodate the new engine.
* Wiring harness and computer: The engine's wiring harness and computer might need to be adapted to work with the Cutlass's existing system. This is often a major undertaking.
* Exhaust system: The exhaust system would almost certainly need to be modified or replaced.
* Transmission: The transmission compatibility is crucial. The new 3.1L engine might require a different transmission than the one currently in the Cutlass.
In short, while a 3.1L V6 *could* fit, it's not guaranteed without careful measurement and potentially significant modifications. You'd need to compare the dimensions of the specific 3.1L engine you're considering with the engine bay of the Cutlass Supreme to determine compatibility. A mechanic experienced with engine swaps would be the best resource to assess feasibility.
