1973-87 Chevrolet/GMC Pickup K20/K25 3/4 ton 4WD 12 in. Front / 11 in. Rear. 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 Truck SuperLift 12 Inch Lift Kit K447 Chevy Chevrolet GMC C/K Silverado Sierra 2500 CTGLKS CTGSS
This Kit uses REPLACEMENT REAR LEAF SPRINGS (52 Inch Length) and BLOCKS to raise the rear. This family of vehicles has a one-piece axle housing with leaf springs on both front and rear ends. When weighing rear lift options, remember that the factory springs, if still in good condition, are considered a pretty good stock spring. This fact, combined with the absence of factory lift blocks, generally makes the vehicle a good candidate for rear lift blocks. Add-a-leafs are the ticket to firm-up the rear for hauling, towing, and to combat spring wrap-up. Replacement springs are the way to go if the factory springs are overly fatigued or damaged.
Features
Heavy Duty front springs Durable Urethane spring eye bushings 6" and taller front springs have degree shims attached for driveshaft angle Rear lift: 52" Rear Leaf Springs and 3" Blocks. Brake hose relocation brackets are included Superide shocks with yellow boots included, other boot colors are availble in Related Products below Foot Notes:
2- 1977.5 to 1991 models require clearance (grinding) of the front driveshaft CV cluster to prevent binding. If vehicle has single exhaust, the cross-over pipe requires modification to clear front driveshaft.
4- Optional extended length brake hoses recommended
#89345 or 91345 - Front Brake Hoses(1973-78)
#89355 or 91355 - Front Brake Hoses(1979-86)
#89365 or 91365 - Front Brake Hoses(1987)
48- Brake line/hose relocating hardware included in kit box.
66- Both driveshafts need to be lengthened.
69- This is a SwampRunner Series lift system that is intended for offroad or exhibition use. Check local laws and restrictions.
80- Vehicles with 56" long rear spring can use spring if shackle hanger is relocated on frame for 52" long application
