fifth gear ratio?? 0.62 or 0.68

[moreause]

i got a 2002 gt with..supose to be a t3650 my info say's that fifth ratio is 0.68 but if i check with speed and rpm. i got 0.62

i check with the other speed to make sure i had a steady reference.
my number first 3350 rpm =40 kph
second --- sorry
third 3500 = 100 kph
forth 2680 = 100 kph
fifth 2000 = 120 kph
those are value taken on the road*and in test mode for more accurate rpm

 

[Roxstang]

Get the numbers off your trans and go to Tremecs web site they have the gear ratios there. Rember OEM can and will make changes during a production run even though what you have isn't what they say you have!