STEALTH CONVERSIONS REAR LOWERING BLOCKS
Stealth Conversions rear suspension lowering kit uses lowering
blocks made of solid (billet) aluminum.
The lowering blocks are unique in that the lower hole
is 9/16" and the upper hole is threaded to accept a 3/8" socket
head cap screw, which has a 9/16" diameter head. This allows bolting
the axle alignment shims on top of the lowering block, as well as bolting
1/2" thick lowering blocks to the 1", 2", and 3" lowering
blocks in order to make 1-1/2", 2-1/2", and 3-1/2" lowering
The Stealth Conversions lowering blocks are available
in 1/2", 1", 2", and 3" thickness. The solid aluminum
lowering blocks cost a lot more than most other lowering blocks because
of the high cost of solid aluminum, and the additional machining required
to tap the hole, but they will not fail, and are more versatile than extruded
or cast lowering blocks because they can be used with axle alignment shims,
and the amount of lowering can be adjusted in 1/2" increments by
bolting the 1/2" block to a 1", 2" or 3" lowering
If you only want to lower the rear 1/2", you can
install the 1/2" lowering block directly to the leaf spring in the
same manner that the pinion alignment shim is bolted to the leaf spring.
Generally, lowering blocks taller than 3" (with 15"
rims) are not recommended because this positions the lower spring bracket
below the rim line (also called the "scrub line") and this is
illegal in many states, because if the tire loses air, the bracket will
drag on the ground, causing the vehicle to lose control.
The Stealth Conversion Lowering Blocks can be used on
top of the axle set-back plates