Hi everyone, I have a 1992 Camaro RS 305 TBI E Code V8, and i dont know what size my throttle body's neck is because i want to put on an open element air cleaner and i dont know what size will fit on the neck of the throttle body. If you know anyhting about this please reply. Thanks alot.

I believe that would be as most 4bbl carbs...5 1/8" neck.

I know I have put open element air cleaners on those cars, so thats why I say you should have no problem doing it.
Just make sure that your air temp sensor, if so equipped, is put back in, like under the base of the air cleaner.
Good luck!