I checked the GM parts books. 57-58 Canadian and US model Pontiacs use 1116533 ignition switch but unfortunately Chevy is a different number. However the fact that it fits 2 years and also US models gives hope you will be able to find one.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
Anyone got a picture of one? Many times ignition switches are the same but have different posts and they can be used and work fine. You may be able to use a Chevy switch but have to change out the plastic connector too.
The other variable is the length of the key section with the threads.
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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. 1963- Pontiac top selling car in Canada
Mahone Bay, NS Still not old enough to need an automatic
Thank you for the replies! There are currently 2 complete units on ebay for the 57 pontiac, but they are quite different from each other. Pictures are attached. Not sure which one is correct.
