Run a Previa without the SAD shaft?

[Kurtanius21]

I am in the midst of swapping a JDM engine into a Previa. I am wondering if I can quickly test the JDM engine without attaching the SAD. I want to know if the engine was installed properly, and is running before installing the SAD shaft. Anyone know if this is ok to do?

[edmyers]

For about 30 seconds engine will get hot quickly.

[zak99b5]

If the coolant hoses are hooked up and the battery is fully charged, it should be able to run for a bit.