1973–1987 Chevrolet/GMC K10–K20 Lift Blocks – 4", 6", or 8"

Enhance the stance and lift of your classic Chevy or GMC truck with premium, 🇺🇸 American-made lift blocks built specifically for the 1973–1987 K10 and K20 4x4 models. Available in 4", 6", and 8" sizes, these custom-fabricated blocks are true to size, delivering accurate rear lift and consistent fitment.

🔧 Key Features

✅ Custom-built in the USA 🇺🇸 for 1973–1987 Chevy/GMC K10 & K20 4WD trucks
✅ Available lift heights: 4", 6", or 8" – each true to size
✅ Heavy-duty fabricated steel construction for rugged performance
✅ Optional taper (if applicable) to improve driveline angle and reduce vibration
✅ Durable black powder coat finish resists rust and corrosion
✅ Sold in pairs for rear axle installation
✅ Compatible with factory or extended U-bolts (not included)

🛠️ Installation

Install Time: Approximately 1–2 hours
Tools Needed: Basic hand tools, jack, and jack stands
Fitment Note: For use on rear leaf spring suspension only. Not compatible with coil springs or independent rear setups.
Vehicle Requirements: Fits most lifted K10/K20 models with 2.5"-wide rear leaf springs and solid axle.

🧩 Compatibility

Chevrolet K10/K20 (1973–1987)
GMC K15/K25 (1973–1987)
Rear axle only; 4WD models with leaf spring rear suspension

⚠️ Important Notes

⚠️ U-bolts not included. Extended U-bolts are required when installing taller blocks.
Designed for rear axle use only—not intended for front or coil spring suspension systems.
Do not stack with other blocks or use in combination with add-a-leaf kits.

🇺🇸 Built in America. Built to Lift.

Each set of blocks is proudly fabricated in the USA with a focus on craftsmanship, strength, and accurate fitment. Whether you're adjusting ride height or gaining clearance for larger tires, these true-to-size, American-made lift blocks are ready for the job.