Chrysler 360 w/ W2 Econo Heads, Headers, 30.over

The HP carb is going to get terrible mileage. They're made for race cars rather than street cars. Your jets are huge and your bleeds and PVCRs are small and no amount of reasonable tinkering is going to fix it.

If I were you and looking for a cruising carb, I would get a 770 Street Avenger. It'll bolt on in place of the HP. You can probably pick one up for about the price you'll get for the HP carb on the used market.

If you have to have the no-choke look they make an HP Street now also, which would probably be more suited to your camshaft out of the box.

Good Luck with it!

Steve