What's perfect ?
Mine is 1.71, but I think lower is better... better tug on the intake.
When I spun my short block over by hand it did look to go down pretty quick compared to the speed coming back up.
Apparently in the 1.7-1.8 rod ratio + a 92% stroke to bore ratio, from what I've heard, obviously you can make tons of power outside these ratios, Inefficient power is cheap and easy now days.