Quote:
Originally Posted by 65Mark
GM used the B10 key blank for ign. and doors, and the B11 for trunk and glovebox from 1936 to 1966. In 1967 they changed to B40 or B42 I think. Memory isn't that good on the 67 and later. 67 is also when they went away from the octagonal shaped key to the rectangle shaped key.
The difference is in the keyway. Look at the grooves on the side of the key.
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I thought it was for the model year 1968 that they changed over to the square key for the colum mounted ignition switch.
My mother got a brand new LeMans Sarari Wagon that year in Verdoro Green with the wood panels.
I just re read your post. I that is what you meant to say.