I have a stock 360 engine with stock exhaust manifolds that keeps blowing the exhaust manifold gaskets. It's blowing the gaskets on the driver side only. First it was #7, replaced the gasket, a few months later, it blew # 1. Everything is tight and I have the conical washers installed. I did buy these manifolds on craigs list. Is there a preferred brand of gasket? Thanks. Happy New Year!!!!
