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  1. 4.6L Tech
    i have a 1998 mustang gt i took the 4.6 two valve motor out and put in a 1998 lincoln mark 8 4.6 four valve motor with 130000 miles on it in it it ran fine for one day till got hot and blew both head gaskets i took it to machine shop had all new valve seals and valves in it it wouldnot run i...
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