In the 1960s, most GM lock cylinders had a code stamped into them. That code (4 digits) would be looked up in a book that the parts department had. That would reference the necessary cuts to make a replacement key. This required a special cutter that was also in the parts department.
The locks in that car were as follows: Ignition and doors took a hex headed key. Trunk and glove box took a round headed key.
As far as I know, there were no records kept of key codes by VIN. That did not start until the late 1970s. Also, some time in the 70s, they stopped putting the codes on the lock cylinders.
As I recall, those locks were fairly easy to pick. They were only 5 or 6 tumblers, and they did not have many of the "high security" features of later years. In that era, many just left their keys in the switch. Locks were only made to keep your friends out. That car was made before the big campaign on TV to "lock your car, take your keys." See how well brainwashing works???
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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