That yr 454 should have the coil in the dist cap. Me personally would buy a new cap and rotor.The coil comes with cap. When you change cap your firing order is 18436572 one is drivers side front and goes clockwise around dist. If it still gets warm and won't crank take the cap and rotor off and a curved black part with 2 wires and 2 screws may be getting hot and quit firing. Replace this peice but do put dialectic grease on the bottom of the part before installing. This insulates the part from the heat hope this helps