8" 1977-1991 GMC 1 ton Pickup 4WD Lift Kit by Jack-It

This 8-inch lift kit for the GMC 1 Ton 4WD trucks is a custom package that Jack-it has put together. These kits have been specifically designed for the exact year of your GM 1 ton 4WD, with proper U-bolt sizes front and rear, all kits include Skyjacker softride front leaf springs. These lift packages will add a 5.5-inch rear block & a long add a leaf kit, with a u-bolt kit. All these options will, of course, include a front sway shackle correct kit, as well as front sway bar drop brackets. Optional M9500 series monotube shocks are available for maximum ride comfort and control. Jack-it has included new front spring eye, shackle bolts, and bushings with this package. It makes the installation much easier, and 30 to 50-year-old bolts and bushings are rarely in good shape to reuse.

GM 1-ton trucks have a 4-bolt trunnion-style D60 front axle. Jack-it includes a raised steering block to correct the draglink angle. We also include new, longer studs, locknuts, and a drop pitman arm to complete the steering correction install.

Top Features and Benefits

• Increases tire clearance
• Replaces worn front leaf springs
• Top quality components
• Complete kit (includes parts not found in most kits on the market)
• Allows the use of larger diameter tires

Components Included

• Front Skyjacker Softride Leaf Springs
• Rear 5.5 block kit
• Rear Long Add-a-leaf kit w/center pins
• Front Spring Eye and Shackle Bolts, Nuts & Washers
• Front Upper Shackle Bushings
• Front Sway Bar Correct Shackle & Sway Bar Drop Brackets
• Black Max or Optional M9500 mono tube series shocks
• Raised Steering Block (w/studs and lock nuts)
• Drop Pitman Arm
• Front and Rear U-bolt Kits
• Extended Braided Stainless Steel Front & Rear brake hoses

Installation Notes:

These kits are designed to fit the single-wheel GM 1-ton 4WD models. All the front components will install on a dual rear wheel vehicle. The rear components may or may not work on the dual rear wheel vehicles. Will need to lengthen both front and rear driveshafts, recommend high-angle CV on the front driveshaft. If you have a 1980-1991 model vehicle with a one-piece rear drive shaft and a slip-style yoke on the rear output of the transfer case, we recommend installing a transfer case drop kit. Suppose your vehicle is a crew cab model with a two-piece rear driveline. In that case, with a carrier bearing in the rear driveline, you may develop a shutter under take off and need to shim the carrier bearing down about 1/2 to 3/4 of an inch to correct the shutter.