racing questions

If the car ran the 1/8 w/4.88s will I need to change to a different gear for the 1/4?

10.50 in the 1/4 is around 126 mph thru the traps. I'm guessing from the pic, your tire is 29". That would put you about 7200 in the lights. All depends on where your making power and the strenghth of the engine build.

Just for reference.......4.57 = 6700..4.30 = 6300..4.10 = 6000. These are approx. because converter slip can alter these numbers.