I got a box of parts from my neighbor and in it are about 9 "J" stamp keys (round door and ignition key) and 9 "K" stamp keys (square trunk key)all uncut and look the be original. What cars were these keys used on?



Thanks,

Call a GM dealer that's been around for a while. They should be able to look on they key blank charts. I used to work at one that still had all those old blanks on hand still just in case.

GM keys rotated every 4 years. The first JK keys of that shape (square and round rather than octagon and round) were used in 1970. The square key was ignition/door and the round was glove box/trunk.
http://www.wernersparts.com/Key%20Blanks.htm

Thanks team chevelle