Is it easier to replace engine and transmission together or apart in a 98 cavalier?

Replacing the engine and transmission together may theoretically be easier in some ways, as the entire powertrain can be removed and reinstalled as a single unit, potentially reducing the number of separate steps and making it easier to align the engine and transmission. However, it can also require more space, equipment, and lifting capacity to remove and install the entire assembly as a single unit, which can be more challenging in some environments or situations.

Replacing the engine and transmission separately may require more time and disassembly steps, but it can also provide more control over the process, allowing for more thorough inspections, repairs, or modifications to individual components as needed. It can also be easier to work with smaller, lighter components during the replacement process.

Ultimately, whether it's easier to replace the engine and transmission together or separately depends on various factors, including the specific year and model of the Cavalier, the mechanic's experience, available tools and equipment, the complexity of the replacement process (including any additional repairs or modifications desired), and the available workspace and resources. It is always recommended to consult with a trusted mechanic or automotive professional to assess the best approach for your particular situation and needs.