sactopv: Read all this:
https://www.google.com/search?q=inst...hrome&ie=UTF-8
You need to use the 1949-51 Merc flywheel, pressure plate and full bell housing with the matching starter plate. You can use the stock 40 throwout bearing. I have an 8BA/8CM in my 40 with the stock 40 transmission. You also need the 49-51 Merc rear sump oil pan or an early Ford pick up rear sump oil pan.
Here's more:
https://www.fordbarn.com/forum/showt...ll+8ba+36+ford
You must read all of this thread.
https://www.fordbarn.com/forum/showt...gine+1940+ford