I want to be sure it has the same gearing as the rearbefore I plugin my CADand figure out why the PO unlugged it.
Can I just turn a front tire while just the front is jacked up and make sure it has the same revolutionsto the drive shaft as when I check the rear??

Thanks

 

It has to have the same gearing...otherwise your front and rear would spin at different speends when in 4wd.....

 

Thanks. Thats what I"m trying to do before I plug in the CAD and engage the 4wd. If the CAd keeps the front axle unlocked when unplugged how do I check the gear ratio BEFORE I put it in 4wd/plug in the CAD?

PO said there were 456 gears in it and it does have good take off power with the 35s on it. Just wanted to make sure the front has 456s too. PO wont return any phone calls or email now of course.

 

The sure way is to remove the diff cover and count the teeth on pinion and ring gears, then divide>

number of teeth in different 9.25 diff gearsets can be found here:

http://www.drivetrain.com/chrysler9.25.html

It is more work to remove the cover
but as a new owner it might be worth it to see the condition of the gears, check the magnet for metal shavings, etc

Bear in mind that the teeth on a 4.56 pinion gear are inherently weaker in strength than lower ratios like 3.55, 3.21, 2.96 etc
They also wear faster.
This is one of the compromises you take on when you go to high numerical ratio, and why automakers tend to favor lower ratios in the diff and higher ratios inside the transmission.

 

... and here's the link for the front axle ... Dana 44: http://www.drivetrain.com/dana44.html

 

put a mark on both front tires nad a point right below it on the housing. then mark the drive shaft position, then spin BOTH tires and count how many tiems the driveshaft spins be4 the tires go one turn, should be between 4 1/2turns and 4 2/3s turn

 

 

shouldnt have 2, but if u do, takes na extra min.