Lowering a leaf spring suspension should be done correctly to avoid handling issues. Here’s why lowering blocks aren’t the magic bullet.
Last week, we explained how reversing leaf spring eyes can lower a vehicle. This week, we’ll explain how using lowering blocks is not a good way to lower or raise a vehicle.
Where the leaf spring sits on an axle, it should be as close to the center line of the axle as possible. As the spring seat moves further away from the center line of the axle, there is an increase in axle wind-up.
This is because, as the fulcrum lever gets longer, it makes twisting the axle easier. Axle wind-up is one of the leading causes of handling problems, and one of the easiest way to get axle wind-up is to install lowering blocks.