Short answer: Yes, you still have a very high chance of 40+.
I can't really 'predict' anything because this relies on external factors, such as the difficulty of your sacs and the strength of your cohort. For context, I got 88% on a sac and still did well overall. Sacs are a learning experience that prepare you for the exam, and it's extremely unrealistic to expect 100% on every sac. If you're doing well in your sacs consistently, then you are in a good position (assuming you are doing better than majority of your cohort). Your marks for sacs don't matter, your rank does. But for the sac that I got 88% on, my ranking was really pushed down since multiple people got 100% and just higher scores in general. Also keep in perspective that your exam matters the most. If you smash the exam, then a 40+ is definitely an achievable goal. Hope this helps. Good luck with psych!