Hello All -

Does anyone know of an online site that shows which parts interchange on GM cars?

Nothing for 60s or 70 GM stuff

Does anyone know if a 64 Impala wiper motor is the same as a 64 chevelle?

According to my chevy parts interchange manual:
63 to 65 Impala single speed wiper motor is part # 4911528,, no listing for 2 speed at all.
64 chevelle 2 speed is part # 4914164 and single speed part # is 4911945.
So according to this manual, no,a 64 Impala wiper motor is not the same as a 64 Chevelle wiper motor. Hope this helps. 64elkynss

Thank you!