Hey guys, been a long time since I have been on here and hope your all doing g well. I need some advice on a sepentine belt set up on a 348. I built a drive system for it and put a reverse flow impeller on the water pump as suggested, and ran it last night but the pump does not seem like it is pumping. The heater hoses are cold like no water is going through, the radiator and both radiator hoses are hot along with my engine. I ran it twice and the temp will slowly climb until I shut it off. Am I overlooking something or does in notwork to reverse a water pump.