There have been two different vehicles bearing the name, Pontiac Sunbird.
1970s
The 1975-1980 Sunbird was a version of the Chevrolet Monza RWD coupe on the GM H platform.
1980s and early 1990s
The 1983 Sunbird is a compact car that was first produced as the J2000 Sunbird in 1982. Later on in the early 1980s the number was dropped and it was just called Sunbird. Production under this name was continued until 1994.
The Pontiac Sunbird is built on General Motors J-body platform which it shares with sibling brands under various names.
The Sunbird depending on the model year came with one of these engines:
After 1994, the Sunbird name on Pontiac's J-body car was replaced with Sunfire. It could be suspected that this was done to avoid possible confusion with the Firebird, which was another model Pontiac produced.
See also
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