You will need to remove the retaining ring from the top of your 1975 Chevrolet pickup truck ignition cylinder. Slide the ignition cylinder out and remove the wiring harness. Reverse the process to install the new ignition cylinder.
Begin by removing the cylinder head from your Chevrolet S 10 four-cylinder engine. Remove the head gasket and clean the surface. Put the new head gasket on and return the cylinder head to its original position.