What is Cid for a 4.2 liter gm engine?

There's no single "CID" (Cubic Inch Displacement) for a 4.2L GM engine. GM produced several different 4.2L engines over the years, and their CID will vary slightly due to manufacturing tolerances.

To find the CID, you need to know the *specific* GM 4.2L engine you're interested in (e.g., the engine code found on the engine block). Then, you can either:

* Look it up: Use an online engine database or a GM parts catalog with the engine code.

* Calculate it: While not perfectly precise due to rounding in the 4.2L figure, you can approximate it:

* Convert liters to cubic inches: 1 liter ≈ 61.02 cubic inches.

* 4.2 liters * 61.02 cubic inches/liter ≈ 256 cubic inches

Therefore, a 4.2L GM engine will have a CID *approximately* 256, but the exact number may vary slightly. You need more specific engine identification to get a precise answer.