Do gears affect Dyno Numbers?

[one mach 1]

Originally Posted by jh 2004 mach

my tuner told me to put my gears in before the tune because they would load the motor at diffrent rpms than the stock gears i dont know if thats true but now i wonder what my 318rwhp would be with out 430s and 10.5dds with315s

Just drive the car, and a few ponies won't be noticed except by you. What counts is how it performs on the track!(and the street)!