Originally Posted by 68bbnova
When running on a chassis dyno, I know they take the run in high gear in the trans (1:1), but will it make any difference on the charts with different rear end gears? I guess what I am asking is will the horsepower look the same with different gears, just the MPH would be different? Sean
http://www.racingjunk.com/profile/27490
We have a Dyno Jet Chassis dyno at the shop. Yes the hp and tq readings WILL be differant. Heres a good example.
My pull truck has a 1003hp motor 6.20 gears makes 700hp at the wheel. thats a 30% loss.
Friend of mine has a 970hp motor with 5.38 gears makes 740 at the wheel. Same drivelines just differant gear ratios.
As the numericaly lower gears it gets closer to the engine hp. Cause it is getting closer to the 1 to 1 final ratio through the drivline.
Hope this explains things some.