If you're looking to give your truck a better stance, an obs chevy 3 5 drop is basically the sweet spot for these old body style pickups. It's not so low that you're scraping every driveway or needing a massive C-notch right out of the gate, but it's enough to get rid of that awkward factory rake and that massive wheel gap that makes these trucks look like they're sitting on stilts.
The 1988 to 1998 Chevy C1500s—and their GMC counterparts—are some of the most iconic trucks ever built. They have those clean, square lines that just seem to pop once you bring the body a little closer to the pavement. But choosing the right drop is a big decision. If you go too shallow, like a 2/4 drop, you might still feel like it's a bit too high. If you go 4/6 or lower, you're looking at serious frame modifications and a much stiffer ride. That's why the 3/5 setup has become the go-to for guys who want a daily-driver-friendly truck that still looks custom.
Why the 3/5 Drop is the Magic Number
Most people don't realize how much "rake" these trucks have from the factory. The back sits significantly higher than the front because Chevy engineers assumed you'd be hauling a literal ton of gravel every other day. When the truck is empty, it looks like it's diving forward. By doing a 3-inch drop in the front and a 5-inch drop in the rear, you're essentially leveling the truck while lowering the entire profile.
An obs chevy 3 5 drop transforms the silhouette. It moves the center of gravity down, which actually helps with body roll in the corners, and it makes the truck look much longer and leaner. It's that classic "sport truck" vibe that really took off in the 90s and has made a massive comeback lately.
How to Get the Front Down by 3 Inches
When it comes to the front end, you usually have two main choices: lowering springs or drop spindles. For a 3-inch drop, a lot of guys like to mix and match.
Drop spindles are generally considered the "right" way to do it if you want to keep your factory ride quality. A 2-inch drop spindle moves the wheel pin up, lowering the body without changing the suspension geometry or the spring rate. However, to get that extra inch for a total of three, you'll usually pair those spindles with a 1-inch lowering spring.
If you try to get all 3 inches just from springs, you're going to have a hard time getting the truck aligned properly, and the ride might get pretty bouncy. The geometry of the control arms gets a bit wonky when you compress the suspension that much with just a shorter coil. Using a spindle for the bulk of the drop keeps your tie rods and ball joints in a happier place.
Tucking the Rear with a 5-Inch Drop
The back of the truck is a bit more involved. To get a full 5 inches of drop in the rear of an OBS Chevy, you aren't just swapping a couple of bolts. The most common way to achieve this is by using a combination of drop shackles and a flip kit, or hangers and shackles.
A "flip kit" is the big player here. It moves the rear axle from underneath the leaf springs to on top of them. Just doing a flip kit usually nets you about 5 to 6 inches of drop immediately. If you want to fine-tune it to exactly 5 inches, you might use different hangers or adjustable shackles to bring it back up slightly if the flip kit went too low.
One thing to keep in mind is that at 5 inches of drop in the rear, you are getting very close to the frame. While some guys get away without a C-notch on a 5-inch drop, you'll definitely want to swap out your factory bump stops for some thin, low-profile ones. If you plan on hauling anything in the bed or if your roads are full of potholes, you'll probably hear the axle hitting the frame every now and then. It's not the end of the world, but it's something to listen for.
Shocks Are Not Optional
One mistake a lot of people make when installing an obs chevy 3 5 drop is trying to keep the original factory shocks. Don't do that. Your stock shocks are designed to operate within a specific range of travel. When you lower the truck, you're essentially "bottoming out" the shock internally before you even hit a bump.
You need "drop shocks" that are shorter and valved specifically for a lowered stance. They'll keep the truck from feeling like a pogo stick after every bridge expansion joint. A good set of nitrogen-charged shocks will make the truck feel planted and firm without being kidney-rattlingly stiff.
Wheel and Tire Fitment
This is where the fun starts. Once you've got the truck sitting right, you have to make sure the rolling stock fits. With a 3/5 drop, you can still run the classic 15-inch 454SS wheels or even the "smoothie" style wheels with a meaty tire if you like that old-school look.
However, a lot of OBS owners are moving toward 18-inch or 20-inch wheels. A 20x8.5 or 20x10 wheel fits beautifully under these trucks with a 3/5 drop. You just have to be careful with the offset. If the wheels stick out too far, they're going to catch the fender lip when you turn or hit a bump. If they're tucked too far in, they might rub the frame or the inner wheel well.
A common tire size for this setup is something like a 245/45R20 or a 275/40R20. It gives you enough sidewall to keep the ride comfortable but fills out the wheel arches perfectly.
The Reality of the Drive
Driving an obs chevy 3 5 drop truck is a blast, but it does change how you interact with the road. You'll become much more aware of steep driveways and speed bumps. Even though it's not "slammed," it's low enough that you can't just fly over obstacles like you could at factory height.
The steering will feel a bit more responsive, and the truck won't feel as "top-heavy" when you're taking an off-ramp. It feels more like driving a big car than a floating boat of a pickup. But remember, these trucks are old. When you lower them, you're putting new stresses on old bushings. If your control arm bushings or tie rod ends are original from 1994, they're probably going to complain once you install a drop kit. It's a good idea to inspect all your rubber components while you have everything torn apart.
Alignment is Key
Once you finish the install, do not—under any circumstances—skip the alignment shop. Lowering the front of an OBS Chevy changes the camber and toe significantly. If you just "eyeball it" and drive around for a week, you're going to chew through a set of front tires faster than you can imagine.
Find a shop that is comfortable working on lowered vehicles. Some "big box" tire shops have trouble getting lowered trucks onto their racks, or their computers don't know how to handle non-factory specs. You want a tech who knows how to get the camber back into a range that won't kill your tires while maintaining good straight-line stability.
Wrapping Things Up
The obs chevy 3 5 drop is arguably the best all-around suspension modification you can do for these trucks. It hits that perfect balance between style and utility. You can still use the truck as a truck—throw a dirt bike in the back or tow a small trailer—but you don't look like a grandpa driving to the hardware store.
It's an attainable project for a weekend mechanic with some decent tools and a couple of floor jacks. Whether you're building a clean street cruiser or just want your daily driver to have a bit more attitude, dropping it 3 inches in the front and 5 in the back is a choice you aren't likely to regret. It just makes the truck look the way it should have come from the factory.