its simple...do you take off in low gear or take off in high? in a normal 4 speed 4th is 1-1 but first is way lower and has a higher # ratio

1970 barracuda convert. 1 of 59
1970 pro street A.A.R. clone (panther pink)
1971 charger
2015 hellcat challenger. Redline red
2014 quad cab 4x4 ram 8 speed hemi