aod transmission in 89 bronco

New owner of a 89 bronco with a 5.8 V8 and 3 speed auto transmission
factory.
If I try to put an aod transmission from a 90 bronco will I need to
change the rear end gears also, or are they the same. Any information
will be helpful.

[email protected] wrote:

> New owner of a 89 bronco with a 5.8 V8 and 3 speed auto transmission
> factory.
> If I try to put an aod transmission from a 90 bronco will I need to
> change the rear end gears also, or are they the same. Any information
> will be helpful.
>
The only real functional differance is the final drive gear, a .71 overdrive.
That's the whole point. 1-3 are essentially the same.
If your goal is better fuel mileage and fewer rpm's on the highway, leave the
gears alone. If your goal is better low end torque, better towing, and better off
road performance, drop the rear gear ratio.

--
..boB
1997 HD FXDWG - Turbocharged Stolen 11/26/05 in Denver
1HD1GEL10VY3200010 CO License J5822Z
2001 Dodge Dakota QC 5.9/4x4/3.92
1966 Mustang Coupe - Daily Driver
1965 FFR Cobra - 427W EFI, Damn Fast.