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    All Small Six 1966 mustang with Bad misfire

    Well I have a 1966 mustang with a 1968 block and a 69 small log head and mated to a c4 auto. A couple of days ago I was driving around and had no problems, then about 4 hours later I decide to pull it into the garage because it was about to rain. When I started it sounded like it had a heavy...