hello im new to the site.i have always loved mustangs how ever i have alway worked on classics. recently i bout a 87 lx 5.0 this past winter i did a b303 cam swap mass air conversion smog pump delete and pulleys.i start the car it runs good no miss, timeing is dead on,but after a few it slowly loads up i tried turning timeing back looked over all my work about a million times i dont have a computer to cheak for codes so i was wondering if any one could give me some advice or a direction to go thanks nick