What would you like to know? ;)
I've run the Fabtech 3" Kit for well over a year and with 30, 31, and 32"
(currently) tires.
With 32" tires, install a set of 4.10:1 gears...that will give you an
effective 3.60:1 ratio to the pavement.
If it's an automatic, you'll have to use something like the Hypertech Power
Programmer to compensate for the larger tires and axle ratio change. No
speedo-gears from '98 on up.
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Ken Hoffman
Sent: Wednesday, October 25, 2000 6:10 PM
To: dakota-truck@buffnet.net
Subject: DML: Gearing VS Tire Dia
hey kids,
Have any of you changed your rear end ratio to compensate for larger
diameter tires? My Dak is a 99 4x2 v8, now w/ a fabtech kit, and I'm
changing from 235/75/15 up to 10.5x31s. I'm currently running a 3.55sg
and am considering 3.92 (or is it 3.90) to compensate for the larger
tires. I would rather spend the money to do it that way than HOPE that
the dealer reflashes to computer PROPERLY to ensure accurate speedo and
computer signals. I'm ignorant as to the proper mathematical equation to
calculate the rpm difference to see wether that ratio change would even be
appropriate. (runon sentence:0) -----Sooooooooo, if any of you have done
this or could help me out on the calculation, it I would sure appreciate
it!
thanks,
ken H
Simi Valley, CA
"The shortest distance between two points is a straight line"
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