Years ago on a chassis dyno we picket up 60+ hp at the tires on my 470 messing with timing, jet and bleed changes.......I was way lean and needed more timing iirc and that's when I got a WB and really started studying the different circuits in a carb. Found out about changing the curve with bleeds and how Holley's tunes were quite wacky in my case so after many low 10 second passes, I got my first 9.98 pass...........Lots to learn on the dyno to at least get ya close and in some cases, bragging rights backed up with respectable et's.....