I have a 1960 Corvette that has sat unstarted for 3years but have no spark I've changed the condenser the coil new battery plugs and wires checked the fuses still no spark. What gives??

Check primary voltage at ignition coil? Probably goes hot when you turn the key on. Primary circuits at the coil, small terminals, positive and negative. Use a test light to check for voltage. If there is voltage, does the light pulse when you crank it? There is the coil wire--the distributor cap--dist rotor, I could go on? Did you replace the points? Does the rotor turn when you crank it?

Check the cap and rotor. Make sure the points are gapped properly too.