Re: 347 dyno
What was the temperature like on the day you dynode it? Also what transmission are you running? Like Iowan said your trap speed and weight suggest you have lost some power compared to your dyno results at the crank. Could be you dynoed in cooler weather, could be trans is inefficient (C-6) or something else. If you can find the lost power it seems you have enough power to meet your goals.
1965 mustang coupe. 306, home ported 180cc heads, funnel web, 10:4 compression, t5z, 4.62 gears in a locker