bad30th is right. it will take more than 3k. the problem is when you add more hp to those cars it will hopp like crazy when you launch it. and if you add drag radials you will brake the axle. the IRS really is not good for drag racing. needs a live axle to run 11 sec in the 1/4 unless you meant it can run 11 sec in the 1/8 th mile that would be posssible hahahahaha