I have a 79 Nova Custom .305. I took off the stock intake and carb and replaced it with an edelbrock aluminum intake and Holley 650 cdm carb. It ran for about half an hour after I got it all back together. I spun it around the block and it felt and sounded great. Later that day it started burping fuel up through the carb. Ever since, when you try to start it, it burps fuel. I changed the carb to a brand new Edelbrock carb and it immediately did the exact same thing. The floats are good. There is an inline fuel filter that is clear so you can see it is good. The fuel pump is the original stock. What could be my issue? The engine doesn't have 3,000 miles since a full rebuild with upgraded pistons and camshaft. It has 10W-50 in it with a quart of stabilizer. The thermostat is brand new. The plugs, wires, and distributor are all brand new and upgraded. The radiator is also new. I took off all of the smog and A/C stuff. So it's literally just the engine, intake, carb and required accessories. I would appreciate any help. I am at a loss and my car hasn't run in several weeks.
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