Quote:

I was told the regular pump has 8 blades and the a/c one only has 6 blades

Correct, as an A/C setup has a different pulley ratio to turn the WP pulley faster so the fan would move more air at idle/low speeds (to compensate for the A/C) but this would supposedly then make the WP cavitate at higher rpms from the faster WP impeller speed so they reduces the vanes to correct this. Myself I dont buy the cavitation worry and the $5 anticavitation disc welded on the 8 vane unit gives you much more flow.

live every 24 hour block of time like it's your last day on earth