Weird cooling on my 84 D150

4spdragtop said

Good points with the impeller. Would a 70 up alum pump be the same? I have one but my truck is ac. If it will work where can I get a rebuild kit?

Click to expand...

A while back Mancini was selling brand new aluminum water pumps for $45.

Any 70 and up aluminum pump will work. The more blades on the impeller the better, I believe that the a/c cars had more fins on the impellers than non a/c cars...

But either will still cool your truck...