[72tutone]

Yep, Ive looked at the waterpump description to make sure its the correct rotation.
The donor serp setup is off an 94 s10 blazer. When looking at the setup it should be reverse rotation as the smooth portion of the belt drives the water pump pulley reverse as the crank turns clockwise so I should be ok.

Sanity check here please if I'm wrong.

But yes, the only other thing I can think of is rad. But all this was working fine with the clutch fan prior to me rebuilding it. So I dont know what in the world is happening here.