Hey all,
I have a 79' HD Chevy 3/4 ton truck with a 350. I recently installed a dual exhaust system, but kept the stock manifolds. Anyway, my problem is that after about 500 miles the doughnut gasket at the manifold/downpipe connection is blown out (both sides).
So in the newsgroups opinion, what most likly did I screw up? Too tight? Not tight enough?
John