Dont think so. The circut has to go throu the tach . You can get a tach from a late 73 or 74 they will work mine does. Other wise get a unit from a later 280 and put the works into your tach's housing and use your old face so the red line stays the same . when you pull the needle be careful and reinstall with rubber cement so if you ever have to take it apart you can.. Good luck Gary Portland Ore.
This was the posting that helped me get my dizzy and stock 240 tach finally working properly. I give HUGE credit to JohnH240 for his step by step on getting the tach to work. Read it carefully, you CAN make a stock 240 Tach work with the 79-83 dizzy, I have one and it's working.