crashandburn
1/2 ton status
I keep hearing the term come up in the specs of the trucks, but i have no idea what they are. So, what are they and do I need them?
CK5
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zero rates
- Thread starter crashandburn
- Start date
Basically they are a 1" block that gets bolted to your spring pack and has an extra hole so you can move your axle forward/backward 1.5" depending on how you install it.
phreddei166
1/2 ton status
Zero-rate-add-a-leaf. 1 " block bolted to spring pack. http://diy4x.com/cart/index.php?route=product/product&path=24&product_id=128
crashandburn
1/2 ton status
Gotcha. Let's say I have a 4" lift already and I added in the zero rate and moved my front axle 1.5" forward, would that be too much for my front driveshaft? It's fine with the lift now. Also would I need longer shocks?
That all depends on how compressed the driveshaft is now. If the shaft is stock then i'm going to say that adding the zero rate AND moving the axle forward at the same time will result in you needing to have the front shaft lengthened.
crashandburn
1/2 ton status
Thanks! Any stability problems using them on the front? Any other problems with moving the front axle forward, like sway bar problems, etc?
Because they attach to the spring pack they are safe for use in the front. As far as the sway bar, ditch the bitch. 
Nope, no problem using them in the front.
how bout the push pull steering? After moving the axle forward that is
88jimmy4x4
1/2 ton status
that too will need to be modified/changed
You can do it but it will amplify the problems that steering setup already has, making a short draglink even shorter.
crashandburn
1/2 ton status
What problems are those?
It's bump steer and also steering control while the suspension is flexing.
When the driver's side tire is at full droop, the horizontal length of the draglink ends up being very short and hence you can have the steering wheel at full crank left and the tires are still pointed straight ahead (or even still pointed right!). The same thing happens with the other side articulated as well.
The problem is really the short stock draglink. It is MUCH more affected by suspension travel than crossover steering, crossover is that much better because the draglink is so much longer and hence not influenced nearly as much by suspension travel.
