In the book “ How To Hook And Launch” there’s a handy chart showing the ideal (as a target) number which obviously is calculated by rear ratio, first gear ratio and stroke. Tire diameter has to be factored into the equation also.My van has a 4” stroke, 4.10 rear, 2.45 first gear and 27” tires. In the books chart it shows I should be at 9.75 or 10, I don’t have it in front of me but I know I’m approx .15 or so above the number which is close enough. I’m not making quite the power you are or running your numbers but it dead hooks everytime with a proper burnout with a 1.625 as a best 60’
