So I blew two head gaskets on my 88 Stepside it has a 350 5.7 l Auto body injection replace both head gaskets intake gaskets manifold gaskets got a new distributor I'm pretty sure I sent my timing right but for some reason my truck sounds worse than it did before I take apart and I know I did everything correctly but for some reason my truck is running really rough almost sounds like it's drowning on the water kind of but it's not someone help me out please any input