Last year I put a new Edelbrock performer intake manifold with a 600 cfm Carb on my 37 chevy truck with a 305 engine bored .060 over. I have been having problems trying to find a leak that leaving antifreeze on my intake manifold. I re-torqued the bolts thinking they had come loose. Still leaks. I put new radiator hose on. still leaks. Put new. Put new thermostat housing on but it still leaks. What happens is that after I drive it it will sit for hours and nothing happens. I've watched it for 8 hrs. and couldn't see a leak. The next morning the manifold would have about an ounce of antifreeze sitting on the front of the intake. I've thought maybe the water pump was shot but I can't find any leakage there. Any ideas? Bart