Finding the right 73 87 c10 drop shocks is easily the most important part of getting that slammed Squarebody to actually drive like a normal vehicle again. Most guys spend a fortune on high-end drop spindles, leaf springs, and flip kits, only to realize their truck rides like a pogo stick because they tried to reuse their stock shocks or bought the cheapest ones they could find online. If you've ever hit a bridge expansion joint and felt like the truck was going to bounce into the next lane, you know exactly what I'm talking about.
Lowering a C10 is a rite of passage for many truck enthusiasts. There's just something about the lines of a 1973 to 1987 Chevy that looks "right" when it's closer to the pavement. But the suspension geometry on these old trucks wasn't exactly designed with a 5-inch drop in mind. When you lower the ride height, you drastically change the operating range of the shock absorber. This is where dedicated drop shocks come into play.
Why You Can't Just Use Stock Shocks
The biggest mistake people make is thinking they can "make it work" with the original shocks. It's a tempting thought—why spend more money if the old ones still have some life in them? The problem is the length. A stock shock is designed to operate within a specific window of travel. When you lower the truck by three, four, or five inches, that shock is now permanently compressed halfway (or more) through its stroke.
When you hit a bump, the shock essentially bottoms out internally before the suspension can even do its job. Not only does this feel like you're driving a forklift with no tires, but it also destroys the shock's internal seals in record time. 73 87 c10 drop shocks are specifically engineered with a shorter body and a different stroke range to accommodate that lower stance while still providing enough travel to soak up the road.
Matching Your Shocks to Your Drop Height
Not all drops are created equal. If you're just doing a mild 2-inch drop in the front with some coils, your needs are going to be a lot different than the guy running a 5/7 static drop.
For those running a mild drop (maybe 2 inches in the front and 4 in the back), you can sometimes get away with a shock that is just slightly shorter than stock. However, once you move into the "aggressive" category—think 4 inches or more—you absolutely need a shock that is valved for that specific height.
The rear is where things usually get tricky on these Squarebodies. If you've done a flip kit on the rear axle, you've moved that axle to the top of the leaf springs. This massive change in position means your shock mounting points are now much closer together. Without a proper drop shock, you'll have maybe an inch of travel before the shock rod hits the bottom of the casing.
Twin-Tube vs. Monotube: What's the Difference?
When you start shopping for 73 87 c10 drop shocks, you're going to run into two main designs: twin-tube and monotube.
- Twin-tube shocks are the most common and usually the most affordable. They have an inner cylinder where the piston moves and an outer cylinder that acts as a reservoir for the oil. These are great for daily driving because they tend to be a bit softer and more forgiving over small bumps.
- Monotube shocks house everything in a single tube. They generally handle heat better and react faster to changes in the road. If you plan on taking your C10 through some twisty backroads or you just want a more "planted" feel, a monotube might be worth the extra cash.
For most guys just cruising to a Saturday morning car show, a high-quality twin-tube drop shock is more than enough to get the job done without breaking the bank.
Don't Forget About Shock Relocation Brackets
Sometimes, even the best 73 87 c10 drop shocks struggle because the angle of the shock is all wrong. When you lower a C10 significantly, the shocks can end up at an extreme angle where they aren't actually doing much to dampen the vertical movement of the truck.
This is especially common in the rear. Many enthusiasts find that installing a set of shock relocation brackets (sometimes called shock extenders) makes a world of difference. These brackets move the mounting point so the shock sits more vertically. This allows the shock to work more efficiently and often lets you use a slightly longer shock, which gives you more overall travel. If you've replaced your shocks and the ride still feels "off," the angle is likely the culprit.
The Importance of Valving
One thing that doesn't get talked about enough in the C10 world is valving. Unlike a modern sports car, an old Chevy truck has a lot of "unsprung weight." Those heavy 15-inch steelies or massive 22-inch transport wheels take a lot of energy to control.
A good set of 73 87 c10 drop shocks will have specific valving to handle the weight of these trucks. You want something that provides a "firm but comfortable" ride. If the valving is too soft, the truck will feel floaty and boat-like. If it's too stiff, every pebble on the road will vibrate your teeth loose. Most reputable brands that specialize in C10 parts have already done the math on this, so sticking with a brand that actually knows Squarebodies is usually a safe bet.
Signs Your Current Shocks are Done For
If you're currently driving your C10 and wondering if it's time to upgrade, keep an eye out for these red flags: 1. The "Bounce Test": Push down on the fender. If the truck bounces more than once or twice before settling, those shocks are toasted. 2. Leaking Fluid: If you see oil "misting" or dripping down the side of the shock body, the internal seals have failed. 3. Cupped Tires: Look at your tread. If you see uneven "scalloped" wear patterns, it means the tire isn't staying firmly planted on the pavement because the shock isn't controlling the spring. 4. Diving and Squatting: If the front end dives hard when you hit the brakes or the rear squats excessively when you take off from a stop light, you need better dampening.
Installation Tips for the Weekend Warrior
Installing a set of 73 87 c10 drop shocks is one of the easier DIY jobs you can do on your Squarebody, but there are a few things to keep in mind.
First, don't tighten the mounting bolts while the truck is still up on jack stands. You want to snug them up, then put the truck back on its own weight before doing the final torque. This prevents the rubber bushings from getting "pre-loaded" or twisted, which can lead to premature failure and annoying squeaks.
Second, check your clearances. When the truck is lowered, everything is tighter. Make sure the shock body isn't rubbing against the frame or the brake lines. It's also a good idea to check your bump stops. If your shocks are bottoming out, it might be because your bump stops are too tall (or missing entirely), letting the suspension travel further than the shock can handle.
Wrapping It Up
At the end of the day, a truck is meant to be driven. There's no point in having the coolest-looking C10 in the parking lot if you dread the drive home because the ride quality is miserable. Investing in a proper set of 73 87 c10 drop shocks is the single best thing you can do to bridge the gap between "cool project" and "reliable cruiser."
Whether you're going for a subtle drop or laying frame, getting your dampening right will make your Squarebody feel decades newer. Take the time to measure your mounting distances, pick a reputable brand, and maybe look into those relocation brackets if you're going low. Your back (and your truck) will thank you for it.