Speedway Motors 3" Axle Tube Adjustable Leaf Spring Kit: CNC-Machined Perch, Shock Mount, U-Bolts, Tire Clearance & Centering for 55-'86 Chevy V8, Set of 16

Leaf Spring Pads Weld-on, universal leaf spring pads for 3-inch diameter axle tubes. Accommodates standard width 2-1/2-inch leaf spring assemblies. Offset key inserts permit fine-tuning of axle housing position fore and aft on leaf spring. Inserts work with all standard leaf spring locating pins. Allows centering of rear wheels in the body opening to provide maximum clearance. Inserts sit in machined pocket of spring pad, allowing them to be easily swapped out. Includes 1/4-inch offset, 1/8-inch offset, and 0 offset keys that provide up to a 1/2-inch of adjustment. Crafted from .250-inch steel plate and precision laser cut and CNC machined. Bare steel construction ready for welding to your cleaned and prepped axle tubes. Shock Mounting Plates Steel leaf spring lower shock mounting plate. Eases the mounting of rear shocks. Accepts 2.5" leaf spring. Bolt holes are 3-5/8" apart center to center. Bolt holes are 3-1/8" center to center on flange sides. Bolt holes are 9/16" I.D. Single shock boss. U-Bolts Speedway leaf sping axle U-bolts are a great replacement for worn out stock bolts and feature a generous length to accomodate lowering blocks (sold separately) to fine tune your ride height. U-bolts are zinc-plated steel to ensure long life and durability. All bolts are 1/2" diameter with 1/2"-20 threads. Fits rearend housings with 3" diameter axle tubes. Works with 3" diameter axle tubes. 8" overall length. 6" thread length. 1/2"-20 thread pitch. Includes nylock nuts. Set of 4. Kit Includes (4) Leaf Spring U-Bolt for 3 Inch Axle Tube, 8 Inch Long (1) Speedway Leaf Spring Lower Shock Mounting Plates, Left and Right (1) Weld On Adjustable Leaf Spring Pad, Perch, 3 Inch Axle Tube, Pair Adjustable Leaf Spring Pads Solve Axle Housing Location Issues Setting up a leaf spring rear suspension involves many factors and one of them is often welding of a new leaf spring perch or pad onto each end of your original or aftermarket axle housing to locate your axle to the leaf springs and to correctly set pinion angle. Once each spring perch is welded in place and the suspension setup and at ride height some builders have found a slight forward or rearward positioning of the axle housing that does not center within the wheel opening in the body of the vehicle. This is not always a major issue, but for some people it is quite noticeable, and in certain instances where larger tires are used to enhance traction offsetting the axle housing fore or aft of centerline may prevent contact of the tire with the wheel housing or quarter panel skin. Our new offset leaf spring pads offer an easy way to relocate the axle housing for centering or tire clearance. Sized to Fit Most Popular Rear Axle Housings Our leaf spring pads are made and start as 1/4-inch plate steel that are laser cut and CNC machined to fit your 3-inch diameter axle tubes perfectly and work with both stock and aftermarket leaf spring U-bolts. They ship as bare steel components, so there is no paint or powder coating to remove for welding, helping you get the job done more quickly. The rear axle spring perches feature a slotted leaf spring center bolt pin pocket that is machined to accept the included offset key inserts. The pocket has a small, machined lip that retains these inserts, requiring no welding of the insert to the pad. This allows future adjustments for tire diameter or centering appearance as suspension and/or ride height changes are made. The kit includes a pair of leaf spring pads and a pair of each key insert for 0-inch offset, 1/8-inch offset, or 1/4-inch offset. The key inserts are reversable, allowing them to be used to offset the rear fore or aft up to a total of 1/2-inch in adjustment range. There are many popular production and aftermarket axle housings that use 3-inch diameter axle tubes, including the Chrysler 8-1/4 and 9-1/4, Ford 8.8 and 9-inch, GM 10-bolt and 12-bolt, and more