I have a non ac 1964 cutlass with the 330,original water pump and pulley, curious if a water pump for an ac equipped car for same year and application will swap with no belt allignment issues, as i see both pumps have same casting number, can anyone confirm they are the same height,would be greatly appreciated,thanks everyone

 

The 1964 330 motors used the same pump for A/C and non-A/C applications.

 

As Joe said, there appears to have only been one pump for both applications in '64; part 384471; casting 382188. After '64 they were different, but with the same height.