New to the site. I just got a 64 SS Impala. No keys. Does anyone know if any other locks on the car are the same as the ignition? I know the trunk is different but was wondering about the doors, glove/console box locks.
Round trunk key only operates trunk and glove box. The octagonal Ignition switch key operates the ignition and the doors. There is often a key code written down on the label inside the glove box that you can take to a lock smith to have a key cut to fit those numbers.
Problem will arise if someone changed the lock in the past, or the pins are so worn in the ignition lock that the tumblers are not lifted high enough to clear preventing it from operating. You can try the passenger side door to see if the key you had cut fits your car.
The first thing I changed when I bought a new project car was the ignition and door locks to prevent any old keys finding there way into the hands of a potential theif after I invested a lot of money in the car. Only thing the ignition key did was to energize a relay to allow the rest of my custom wired car to crank up but without the key nothing worked. It was kind of like cranking the Batmobile with flipping switches and pushing buttons on a panel above the rear view mirror. (you know Atomic Batteries to power, turbines to speed...