[rotorwrench]

It depends on the system but anything can be made to work in some way that would likely be acceptable. The old Load-O-Matics had venturi vacuum but there was no mechanical advance at all. I've seen where folks use a modified Chevy distributor with an adjustable port in the vacuum can and they set it up to use manifold pressure to operate a load control mated with the existing mechanical advance and they work pretty well. Flatheads don't need much advance. The small block Ford will likely need at least what it was set up for in 1984. If heads and cam are changed then all that may require further changes but it likely wouldn't be all that much change. On a different carb a person needs to check and see what pressure the port is supposed to give and compare that to a stock type Ford carb to see if it's compatible. They have several ports on the Edelbrock AFB carbs. A person can use them or plug them but there should be information about that in the carburetor specification sheet.