I hope it is only 4-6 weeks for you as well. I ordered a 408 engine from Blueprint engines back in February. Still waiting. They are having issues getting cams. They ordered a lot, and after checking the specs they rejected the whole lot. Talked to them on Tuesday and they said they have NO ETA on a new shipment of cams. They have reached out to other producers and the jury is out. Sounds like a long wait is instore for my engine!