lock up

  1. 700R4 lock up ?

    Transmission & Driveline
    Hi I have a 700r4 in my chevelle, and I am kind of confused. The guy I bought it from had it in a firebird with 500 hp and he had it built from a local shop and ran it with no problem. Now here is where i am confused I have not wired in a switch and the tranny locks up in second gear and 3 and 4...