4:10 Gear Shift points ?

try browsing this thread: http://www.stangnet.com/mustang-forums/threads/4-10-gear-videos-in-daily-driving.521948/

I went through the same thing, as have most of us. From my experience racing my Mach 1 w/ 4.10s shiftpoints are lower w/ steeper gears by about 300 rpm and they decrease as you go through the gears also by about 300 rpm. They are lower because the gears are closer together. Precise shiftpoints w/ a particular rear end gear depend on the engine's power level, it's powerband and transmission gearing. I don't know your mods but I'd say try 5700, 5500, 5200 and see how that works. Set aside alot of trial-and-error passes to get it down.