You have two choices, use it or not use it I would make sure it was alittle on the rich side with the E85 and not to much timing and go bracket racing Who did or who is going to do your E85 Carb? I had AJ Castilini(SP?) do mine, it is real sensitive on the dyno to jetting, one jet size either way would make it lose power BTW, E85 and bracket racing are made foe each other, hardly any change in ET from early morning to late afternoon Don't tell anyone else that though AKA I would worry about te main webbing on any stock 440 block if you decide to RPM it much above 7000 RPM on the edge on the tune up Run it slightly fat and don't push the total timing and you should be okay