416 dyno tuning help

Needs more timing!! Don't start changing things until you get pretty close on the timing and AF ratio's. I'd move the timing to 32-34 total and repull it watching the AF. If the AF looks good add timing until you stop seeing gains. Refine the AF ratios and then try spacers and modest timing changes. The other trouble is what you see on a dyno may not be the fastest way down the track and the tune may(often) need further refining in car.