sleeper said:
Why won't the gaskets work?
it is because the holes coming out the heads for exhaust holes are not round as the header gasket is ,,,,what happens is the gasket that covers the bottom of the holes is so thin there it takes no time to blow out and cause a leak on the bottom side of headers,,,i trimmed the top of my gaskets to move it up a bit but there is only so much to trim before bolt hole wont line up ...when eye balling mine there are like small tabs right below head deck that wont let the gasket go any higher up to fit better ,i took a dremel and ground spots down on gasket ,,,it worked too at idle but, i got on it a few times then i popped hood and could hear small leaks coming from the side i used the paper gasket ,,the side i reused oem metel gasket is on the money honey ,,
i dont understand why they did not shape header holes the same as exhaust port holes are ,,the header hole overlaps the exhaust port holes ,,,but after talking to others with gibsons and others with headers ,,non of them match the heads exhaust port holes exactly,,so crust of story ,,save yourself a headacke reuse oem metal gasket,,i will take a pic this afternoon and post it ,,after i redo my right side and reinstall oem