Big block water pump?

[Mopar6974]

I have a 67 440 going into a Dart. It had power steering and a/c. I am going with out both and am looking for a single water pump pulley and crank pulley. However the problem I am having is that in order to do this it requires a different alternator bracket. Everyone I see online for sale tell you that you need a 68 and over water pump. What is the difference of the 67 water pump to all others? Does anyone have one they are not using?

 

[moe7404]

basicly the big blocks in the late 60s. had 2 water pumps. the A / C pump had 6 blades and was spun 1.4 ratio. the non- A / C pump, spun at .95 ratio 10 blades. per my chrysler factory service manual 1967 coronet / dart. but back in the day most part houses just gave one that was 8 blades. get a thin S.S. plate and rivet it to the blades, will get much more water.

 

[Jim Lusk]

The location of the bolt hole near the thermostat is different. I don't have pics of the difference, but do have both styles here and might be able to get pics between now and the weekend.