RideTech Suspension Install 88-98 Chevy OBS CK GMT400 Trucks

Chris Hamilton . December 23, 2019 . OBS Builders Guide

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Generally, truck trends are unpredictable and cycle quickly through the ranks of the top industry builders and ballers. F-100 bump-sides and pro-touring, patina-paneled C10s are just a few recent examples of popular projects that the average Joe wouldn’t think to produce until they see a fully completed custom gracing the pages of national publications or influential social media channels. These ideas and completed concepts come from the mindset of being unique with the goal of making a statement at massive events like SEMA, LST and Texas Heatwave. With that said, I think it’s safe to say we all see the next major trend hurling down the pipeline like a 6-foot surfer named Bodhi riding a 15-foot wave off Bells Beach during the 50-year storm. (That was a “Point Break” reference if you didn’t catch it. What a great ’90s movie!)

Speaking of the ’90s, if you were a natural born truck junkie finally making it to the legal driving age around those times, you most certainly wanted a Chevy C/K truck since they were literally everywhere. Everyone from utility company employees to school district secretaries used these heavily produced pickups for their day-to-day operations. Even your grandpa’s grocery-getter was most likely an ’89-’98 Chevy. They came in so many different visual styles with factory options galore. Originally designed by Donald Wood in 1983, Chevy was able to move 551,223 of these GMT400 trucks by 1989 alone according to the Standard Catalog, not to mention the popular 454 model released in 1990 that sold 16,953 units over the four years with 13,748 of those units selling in the first year of production alone.

This is the 1995 Chevy C/K that we originally picked up for a mere $2,000. We purchased it from the original owner, it has 150,000 miles on the factory installed engine, cold air conditioning and a handwritten chart that records all of the basic maintenance that has ever been done. The perfect project truck, and we named her Stella for “female star” because we intend to make her famous!

With that heavy of a number, it’s easy to see why we not only saw a massive increase of these trucks in magazines, but also why the custom aftermarket scene is heating up so much right now. These trucks are still pretty easy to come by and the demographic of buyers are slightly older and more well-off than your average new-truck enthusiast. The guys who wanted these trucks in their teens are now older, generally successful and more comfortable than they were at 16 years old. These factors are driving the great custom parts manufacturers to focus on these industry icons to get ahead of the curve.

It’s easy to talk the talk, but it’s far more impactful to walk the walk. So, we put on our Airwalks and jumped into the deep end of desire by picking up a running, driving 1995 Chevy C/K truck from the original owner for a smooth $2,000. Cold A/C and a solid cranking 4.3-liter V-6 gave this truck the appeal, but a full gas tank and a fresh oil change just shows that the previous owner still has love for this 20-plus-year-old family member.

In the next few issues we are going to take you through the process of giving this truck new life on the same old roads it’s been cruising down since its inception, first starting with suspension, brakes and wheels/tires, followed up with a facelift for the ages. The plans don’t stop there, but you’re going to need to stick to the script the see the next steps. If you’re not a subscriber already, I implore you to do so. If this truck doesn’t motivate you to go out and start wrenching on your own project, I’m not sure you picked up the right publication. Now let’s get to the good stuff!

Usually we include the “after” shot toward the end of the story, but we wanted to show you the before and after side by side so you can see the dramatic transition. Now to walk you through how it was done.

Like most of the projects in the past, we turn to Dallas Maynard of Full Pen Fabrication to make the magic happen. Before he got down to the nitty gritty, Dallas removed the bed and pressure cleaned the frame. Twenty-plus years of rust and road grime is better off in the driveway than in your face—am I right?

While he cleaned the chassis, I laid out all the parts. Our suspension of choice is RideTech’s all new wishbone designed coilover suspension that is completely bolt in and professionally engineered by the team at RideTech. We are also installing Pro Performance’s big brake upgrade that is designed specifically for the ’89-’98 GMT400 trucks.

First on the list is to remove the old suspension hardware. Leaf springs are old news and completely obsolete with this kit.

Using the supplied paper template, Dallas marked the C-notch location and used a cut-off wheel to slice the frame. Before the new structured brackets can go on, he took the time to coat the frame to avoid any more future rusting.

A few C-clamps hold the new RideTech notch bracket in place while he drills out all the holes and bolts in the new hardware. Everything we needed was supplied in the kit, saving us trips to the hardware store. The notches are reinforced in multiple planes to maintain structural integrity while improving axle to frame clearance.

Moving on, Dallas installed the wishbone cradle between the frame rails. The cradle accepts a “wishbone” upper link that eliminates the need for a Panhard bar or other lateral locating device.

Next in the list is the lower axle mounts for the coilovers. Compared to the platform’s original leaf springs, RideTech’s wishbone system dramatically improves ride quality and handling and accepts either coilovers or Shockwave for air suspension.

All RideTech coilovers utilize a single-tube cartridge. Known as “monotube,” the design features a significantly larger piston area, which in turn provides more responsive damping than a twin tube shock. A single adjustment knob controls the rebound curve, allowing you to fine tune your truck’s shocks to suit your driving style and specs. Also, we get our first look at this killer brake upgrade from AZ Pro Performance.

The final piece is the lower links that feature RideTech’s patented R-joints. The advanced rod end design offers long service life with zero binding and no noise.

After a quick coat of paint, we can step back to appreciate this amazing system setup. We can’t wait to drive it!

Before the bed could go back on, Dallas had to make a quick cut to the brace under the bed. This gave us that little bit of extra clearance we needed without cutting the actual bed floor.

The front of this truck is next on the list. To make things easy, we simply unbolted the upper and lower control arms, the factory sway bay and steering linkage. Slide it out as one massive unit and ask a friend to help you toss it in the dumpster.

With an empty wheel well, we are ready to bolt in the new upper and lower control arms. All the factory brackets are reused and the coilovers mount in the stock shock location. Really well designed!

Before we can install the new McGaughy’s spindle, we need to make some minor modifications. A simple slice with the cutoff wheel and a drill/tap is all that’s needed. It’s time consuming but definitely not something you can’t do at home. Just use the right tools and be patient.

With the spindles installed, Dallas can now focus his efforts on these massive disc brakes from AZ Pro Performance.

Key features of these brakes:

No need to buy new spindles, just modify current spindles
Uses new calipers, not rebuilt
Precise machined hub
Laser cut mounting bracket
Fits 19-inch wheels and larger
Will work with most aftermarket wheels, since caliper offset is kept to a minimum