4.10's boosted?

[Blown2v5.0]

I'm almost done installing my vortech kit. At what rpm will I cross the traps in the 1/4 mile. Will I run out of gear? Info: 500-550 hp, 6600 rpm shifts, 315/35/17 tire, 4000 rpm stall. I'm hoping not to change gears but I see most running 3.73's

 

[truebluedevil02]

my fox with 4:11's(9" rear) shifting at 6500rpm trapped 118mph and was crossing the line at 6400rpm. I would think you will be trapping faster than that so I would say get a taller tire or change to 3:73's.