- Joined
- Oct 12, 2009
- Messages
- 151
- Reaction score
- 3
- Points
- 18
- Location
- Wimer, Oregon
- Vehicle Year
- 86,87 90, 91
- Make / Model
- ford
- Engine Size
- 2.9,2.9,4.0,4.0
- Transmission
- Manual
So if I change the gears in my wifes exploder from 3.73 to 3.27 for better mileage the tech calculater says instead of going 65 we'll now be going 74 mph so obviously we'll only go 65 mph so the rpms are going to be lower also. so what kind of mileage increase am I going to get. Its getting @20 mpg now. 91, 4.0 3.73ls, p235/75r15. Ulterior motive is the 3.73ls is going in the 87 trk. Thanks guys and Merry Christmas/Happy New Year.