I have an air/fuel ration gauge. cheap digital summit one and only the bottom 1 or 2 lean bars come on. The car just feels like it doesn't have much power, it doesn't pull. I have been shifting at 6000. only 60ft at 1.93. Was at 1.7 last year with blue racing 465/488 lift cam. It only ran a best of 8.63 at 78mph. Laster year was 8.2 all day long.
I have 5.14 gears, 4000 stall converter and 30x14 rear tires.