harleytech
New Member
- Joined
- Sep 28, 2008
- Messages
- 32
- Reaction score
- 0
- Points
- 0
- Location
- palatka, fl. jax.
- Vehicle Year
- 1996,1979
- Make / Model
- Mazda,Ford
- Engine Size
- 4.0,429,400
- Transmission
- Automatic
I have put in a 3.73 exploder rear axle and 31x10.5 under my truck and really need help figurin out what i need to do to recalibrate the speedo without buying a tuner. any ideas thoughts or help? original gears were 3.27 and tires were 245x75