Fabricated steel lift blocks—worth the investment?
Many trucks have lift blocks installed from the factory, and a lot of lifted trucks use lift blocks in the rear. For mall cruisers and gas-powered trucks it may not be too big a deal to use cast lift blocks, but with a powerful diesel engine under the hood and the load these trucks are capable of towing and hauling, are cast lift blocks safe? Many truck enthusiasts say no, they are not. Short of buying an expensive set of custom leaf springs, what alternatives are there?
The team at Top Gun Customz in Alcoa, Tennessee, has developed fabricated steel lift blocks that can withstand the abuse our trucks deliver. They are even available in a wide variety of heights, from 1 to 6 inches in 1/2-inch increments, to allow you to set the ride height of your truck with far more precision than is possible with most standard lift blocks. The steel fabricated block is also pre- cision machined to fit each application and is far stronger than a cast block, meaning that even in cases of violent wheel hop the block will stay in one piece. Starting with the 4-inch block and larger, the blocks are built with gussets on each side for even more strength. For maximum stability, the blocks are a full 3 inches wide to mate properly to the spring and spring perch. They are also tapered where necessary for proper pinion angle correction to prevent driveline vibration and premature U-joint wear.
We made a trip to visit the Top Gun facility and watched as Cody Best welded a set of lift blocks. Then we followed the installation of a set to replace cast blocks on a Dodge 2500. Newer Dodge trucks have three locating studs on the leaf spring pack, and these blocks are designed with that in mind so no modifications to the leaf springs are required for installation. Using the lift in the shop, it took Top Gun installer Brandon Greene less than an hour to swap out the lift blocks. If you are installing them in your garage or driveway you may need a little more time. As always, whenever you are working on your truck practice safe shop techniques, and if you’re ever in doubt have your local diesel performance shop work on it for you. Just remember to tell them that your friends at Ultimate Diesel Builder’s Guide sent you. UDBG!
Big diesel trucks need lift blocks that are as strong as the engine under the hood.
These fabricated steel lift blocks from Top Gun Customz come in a great-looking black finish and are stronger than cast blocks.