For these reasons we do not recommend the use of blocks to change the ride height of any vehicle.
True, the Big 3 have used blocks on the rear of some trucks, but pay close attention to the next one you see traveling down the road.
Notice how the axle attempts to twist. This twisting happens on all vehicles as they accelerate and brake. However, the twisting is much more severe on block-equipped vehicles.
Also notice blocks are no longer used by these manufacturers.
We can manufacture springs that will either lower or raise your vehicle up to 3-inches, so why even consider blocks?
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