8 speed not practical without a lot of $$ and you will need to cold set it too.
Some old Schwinn freewheels took an odd tool, that the shops around here did not have. I ended up buying one, used it today in fact. It was kind of spendy for a freewheel tool.
Maillard Sachs Atom Normandy 24 Spline Freewheel Removal Tool RARE New | eBay