Lightning

4.10 gears

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Old Apr 16, 2002 | 11:01 AM
  #1  
tom vandiver's Avatar
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From: baton rouge la
4.10 gears

I am about to change from 3.55 in my '99L to 4.10. There is a 13%
difference which will affect speedo and shift points. I think that only two options are selectable in the program, 3.55 or 3.73. Does
anyone know if there is a choice for wheel size. I think that if 17"
wheels are selectable, the speedo and shift points would be close. Any info would be appreciated. Thanks.
 
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Old Apr 16, 2002 | 01:09 PM
  #2  
1BADTK's Avatar
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From: President HALO
No wheel size option in the existing Ford programers for the Lightning, only a single gear selection. Chip can be adjusted to compensate for incorrect reading.
 
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Old Apr 16, 2002 | 01:37 PM
  #3  
Speedracer29's Avatar
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From: Cleveland, Ga
Chip can be adjusted for it. I had it done. Although I would not suggest the 4.10, I would go with a 3.73, I am fixing to put mine back in. I actualy went slower with the same 60ft time with the 4.10, plus the gas mileage sucks. Although from 80 to 140 the truck pulls very mean like.
 
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