I have an 09 challenger and was wondering how much power the stock long block will take? Not going to do any thing crazy, but would like to know where the limit is before I hit it.

 

Not many places have pushed those engines to their "limits" yet but there's a few boosted 600+ rwhp Hemi's running around.

I don't think anyone is going to be able to give you a definitive limit yet. The R&D for performance on those engines hasn't been around long enough. This is a question for 3-4 more years from now.

 

Thanks for update.