formula for figuring out what gears you have
#4
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Originally Posted by BIG RON
what if the truck was regeard.
Have somebody you trust your life to slowly move the car, and count how many times the driveshaft spins with one revolution of the wheel.
#7
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Originally Posted by BIG RON
Did it, about 2 1/2 revs. in the rear and about 2 1/4 revs. in the front. Whats the gearing?
And if the front and rear aren't the same don't use 4wd until you get them matched.
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#8
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The other option is similar, but doesn't require moving.
If you have a NON ADD rig you can lock one hub, have the truck in 2wd and spin the front drive shaft and see how many times it takes to get the CV to spin once.
You can also firgure it out by RPM in 4th(5spd) gear at say 50 mph, but you will have to know the rolling radius of your tire.
If you have a NON ADD rig you can lock one hub, have the truck in 2wd and spin the front drive shaft and see how many times it takes to get the CV to spin once.
You can also firgure it out by RPM in 4th(5spd) gear at say 50 mph, but you will have to know the rolling radius of your tire.
#10
Contributing Member
Automatic Disconnecting Differential
It's a vacuum operated solenoid that disengages the passenger side axle from the diff.
There is not really anything as "ADD hubs" - there's a splined plate that locks the hub to the CV axle constantly, so as long as the truck is moving, the front drivetrain is all spinning
It's a vacuum operated solenoid that disengages the passenger side axle from the diff.
There is not really anything as "ADD hubs" - there's a splined plate that locks the hub to the CV axle constantly, so as long as the truck is moving, the front drivetrain is all spinning
#12
Registered User
this would go a lot better if you searched a wee bit.
faceing the front of the truck look under it. if you see this big thing attached to the drivers side of the diff with wires and hoses comming from it that looks like the pic in the box that says w/ADD
well then you have ADD
faceing the front of the truck look under it. if you see this big thing attached to the drivers side of the diff with wires and hoses comming from it that looks like the pic in the box that says w/ADD
well then you have ADD
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