what trips end of run?

Okay,if my tires trip the stage beam 3 inches off the ground,but I have a dam that is 20 inches forward at 5 inches off the ground,will it trip the beams at the big end of the track,getting me a better time?Sorry,,,,trying to figure out any way to keep the Slant and run a couple 10ths faster,cant spray,stock pistons and 10.7 compression,Mark