In Northern California? Get this professionally set up & installed!
Fitment Information
- Chevy K10 / K20 4x4 (1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987)
- GMC K15 K25 4x4 (1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987)
Specs & 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.
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.
Product Description
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.

More in this category
Apoc Industries
Chevy K10 Parts
Chevy K20 Parts
GMC K1500 Parts
GMC K2500 Parts
Brand: Apoc Industries
Reviews on this product
Ordering from Redline360
Redline360 is an Authorized Dealer so we only sell authentic and genuine parts and accessories.
Order updates, tracking and info
Our goal is your complete satisfaction. Upon ordering, you will receive an email confirmation of your order along with your invoice. You will be able to log into our website 24/7 to check on your order at any time. Your order is processed Monday through Friday from 8am to 6pm PST as soon as it is placed. Once your order ships, we will email you a tracking number so you can track your package.
Protect your purchase
Redline360 offers our customers piece of mind! We have partned with Extend to offer you Extend Product Protection and Extend Shipping Protection. Read about each protection that Extend offers to Redline360 customers!
Multiple distribution points ready to serve you!
We ship from multiple locations around the United States so you receive your part as quick as possible. Not every warehouse stocks all the same parts, so the closest warehouse to you that has the part in stock is where your order will ship from. We ship from California, Nevada, Indiana, Michigan, Florida, Texas and Pennsylvania.
Secure Ordering
We take security seriously! We are never exposed to your credit card information, and it's never stored. Credit card transactions go through the credit card processor directly. We also offer various other payment methods such as PayPal, Affirm Financing (Pay over time), Amazon Pay, Apple Pay and more!
Any non CARB compliant items can not ship California. We will notify you if we have to cancel your order.
Some products may be subject to local rules, laws and regulations in certain areas. Always check your local laws to determine legal restrictions. We are not responsible if you buy a product that is not legal in your area.
For items that have free shipping, free shipping only applies to the lower 48 states.
Questions? Contact us.
Actual item may vary from picture
Redline360 is an Authorized Dealer so we only sell authentic and genuine parts and accessories.
Order updates, tracking and info
Our goal is your complete satisfaction. Upon ordering, you will receive an email confirmation of your order along with your invoice. You will be able to log into our website 24/7 to check on your order at any time. Your order is processed Monday through Friday from 8am to 6pm PST as soon as it is placed. Once your order ships, we will email you a tracking number so you can track your package.
Protect your purchase
Redline360 offers our customers piece of mind! We have partned with Extend to offer you Extend Product Protection and Extend Shipping Protection. Read about each protection that Extend offers to Redline360 customers!
Multiple distribution points ready to serve you!
We ship from multiple locations around the United States so you receive your part as quick as possible. Not every warehouse stocks all the same parts, so the closest warehouse to you that has the part in stock is where your order will ship from. We ship from California, Nevada, Indiana, Michigan, Florida, Texas and Pennsylvania.
Secure Ordering
We take security seriously! We are never exposed to your credit card information, and it's never stored. Credit card transactions go through the credit card processor directly. We also offer various other payment methods such as PayPal, Affirm Financing (Pay over time), Amazon Pay, Apple Pay and more!
Any non CARB compliant items can not ship California. We will notify you if we have to cancel your order.
Some products may be subject to local rules, laws and regulations in certain areas. Always check your local laws to determine legal restrictions. We are not responsible if you buy a product that is not legal in your area.
For items that have free shipping, free shipping only applies to the lower 48 states.
Questions? Contact us.
Actual item may vary from picture