1973–1987 Chevy / GMC K10 / K20 Rear Lift Blocks | 4", 6", 8"
The square-body K10 and K20 are one of the most iconic platforms in truck history — and they're still being built out with bigger tires, lifted suspension, and custom stance. The Apoc Industries Fabricated Steel Lift Blocks are built specifically for 1973–1987 K10/K20 fitment, delivering true-to-size rear lift with the welded steel construction and corrosion-resistant finish these classic trucks deserve.
Fits 1973–1987 Chevrolet and GMC K10 and K20 4WD trucks with rear leaf spring suspension. Available in 4", 6", and 8" lift heights. Sold as a pair. Built in the USA.
Features
- Fabricated Steel Construction: Heavy-duty welded steel built for rugged use — stronger than cast alternatives.
- Taper for Pinion Correction: Built-in taper helps correct driveline angle to reduce vibration at lift height.
- True-to-Size Lift Heights: Listed height equals actual lift achieved — no guessing.
- Satin Black Powder Coat: Durable corrosion-resistant finish suited for older trucks in tougher environments.
- Sold as a Pair: Both rear blocks included.
- USA-Made: Built by Apoc Industries.
What's Included
- 2x fabricated steel lift blocks (sold as a pair)
- Optional: extended U-bolts available at checkout
Installation
- Est. Install Time: 1–2 hours
- Tools Required: Basic hand tools, jack, jack stands
- Extended U-bolts required — factory U-bolts will not work with increased block height
- Rear leaf spring suspension only — not for coil spring or IRS applications
- Alignment recommended after installation
Fitment
- 1973–1987 Chevrolet K10 and K20 (4WD)
- 1973–1987 GMC K10 and K20 (4WD)
- Rear leaf spring suspension only
- Available lift heights: 4", 6", 8"
Also From Apoc for C/K Trucks
- 1988–1998 C1500 / K1500 Compound Taper Lift Blocks — next generation version with compound taper
- 1988–2000 K2500 / K3500 Lift Blocks — heavy-duty 8-lug version
- Apoc Build Blog — classic truck suspension guides