Gear ratio question

5500-5700 is the range, i have to be honest and admit it was my first time racing at the drag strip and i was getting used to it all. the rpm range right at and just past the traps was 550-5700, so right at the traps it could have been 5500 I didn't shut it down right away.

I'm pretty sure they must be 4.56 gears, but when i goto my storage place soon i'll turn the rear tires and count that versus a turn on the drive-shaft.