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I am putting an elect water pump into my 1990 L-98. I have a question about 2 hoses. Their is one that goes from the base of the intake to the bottom of the pressure tank. A second line comes out of the mech H2O pump at the 9 pm position and goes to the same place on the bottom of the pressure tank. Can I take the ends of the hoses off the intake base and H2O pump tie them together and be done with them?
No You cant!
Here are the diagram of water route on my 1990 L98 (with oil cooler).
Dont You have a heater in Your car? You said that hose go directly to reservoir from intake manifold.
I am myself modifying now a WP321 (Meziere with pulley) to fit to my car.