Is there a way to adjust...

Whenever you grab a bunch of files and drag them over a folder, if you hold them over the folder for a second or two, the folder will automatically open up while you are still holding the files with your mouse. Is there any way to adjust the delay when you hold something over a folder, when the folder opens up?

Finder > Preferences > General > Spring-loaded folders .....

Hey perfect, thanks, that was easy.

it always is with os x

If you wanted it to be sooner, you could always just tap the spacebar.