Are you running stock heads? If not what kind? Indy has both heads and intakes but you didn't say where your power range is. Is it a drag car or trailer puller? There where differences depending on witch Edelebrock(single plane) you got for a 440. I don't think they even make them anymore but the TM-7 was a way better intake than the torker was. I also have an old Weiand with even better runners than the TM-7. If i was building 500+CI Iwould probably run indy heads and intake. You might want check this out.
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