ok, my brain is shot and so is my pocket book... i had a 5.0 gxi-f motor that did a freeze job on me and cracked the block so I ended up putting in a new 350 long block... engine run like a kitten but problem is rpm on dash stays at 0... not getting water into block? over heating and have to shut it down. replaced raw water impeller (not needed since old one looked great) and check hoses for leaks and if they were hooked up right.. ok all good... now what?