Thinking about a second gen camaro ls swap? It's basically the gold standard for resto-mods these days, and for a pretty good reason. If you've spent any time behind the wheel of a stock 1970–1981 F-body, you know the vibe. They look incredible—arguably some of the best lines to ever come out of Detroit—but that old 305 or 350 small block can be a bit of a letdown by modern standards. They leak, they're cold-blooded, and let's be honest, they just don't have the "get up and go" that a modern fuel-injected engine offers.
Swapping an LS into these cars transforms them from a weekend cruiser that might leave you stranded into a reliable, fire-breathing beast that you could legitimately daily drive if you wanted to. But, before you go ripping that old engine out, there's a lot to consider. It's not just "drop it in and go," no matter what some guy on a forum told you.
Picking Your Poison: The Engine Choice
First off, you've got to decide which LS you're actually putting in there. If you've got deep pockets, a crate LS3 is the way to go. It's shiny, it's new, and it makes 430 horsepower right out of the box. But most of us are looking at the "junkyard dog" route. The 5.3L LM7 out of a Silverado or Tahoe is the bread and butter of the second gen camaro ls swap world. They are cheap, they handle boost like a champ, and they're everywhere.
If you can find a 6.0L (LQ4 or LQ9), grab it. That extra displacement makes a world of difference in a heavy car like the Camaro. Just remember, if you're pulling a truck engine, you're going to have to deal with the intake manifold height. Those truck intakes are tall and ugly, and they usually won't clear a stock Camaro hood unless you're running a massive cowl. Most guys swap to an LS1 or LS6 car intake to keep things low-profile.
The "Making It Fit" Problem
Here's where things get a bit greasy. The second gen subframe is a great piece of engineering for its time, but it wasn't built with the LS oil pan in mind. If you try to use a stock truck oil pan, it's going to hang down about three inches below your crossmember. One bad speed bump and your engine oil is all over the pavement.
You're going to need an aftermarket swap pan. The Holley 302-2 or 302-3 pans are pretty much the industry standard for this. They clear the crossmember and the steering linkage perfectly. Speaking of steering, if you're still running the old-school gear box, things get tight. Some guys switch to a rack and pinion, but that's a whole other rabbit hole. Just make sure your engine mounts allow for some adjustment so you can clear that steering shaft.
Getting the Power to the Ground
You've got the engine sitting in the subframe. Great. Now, what are you bolting it to? If you're sticking with an automatic, the 4L60E is the common choice because it's what came behind most of these engines anyway. It fits the tunnel mostly okay, though you might need to "massage" the metal with a big hammer in a few spots.
If you want a manual, the T56 six-speed is the dream. There is nothing like rowing gears in a second gen. However, be prepared to cut your floor. The T56 is a big transmission, and that 1970s tunnel wasn't designed for it. You'll need a specific crossmember, too. Don't try to weld up something sketchy here; your driveline angle is super important. If it's off by even a couple of degrees, you're going to have a vibration that will drive you absolutely insane at highway speeds.
The Spaghetti Mess: Wiring and Fuel
This is the part that usually scares people off. Modern engines need a lot of electronics to stay happy. You have a few choices here. You can take the factory harness from the donor truck, spend forty hours thinning out the wires you don't need, and pray it works. Or, you can buy a standalone harness. Honestly? Buy the standalone. It's worth the money just for the lack of headaches.
Fueling is another big one. Your old mechanical fuel pump isn't going to cut it. The LS needs about 58 PSI of constant pressure. You can run an external pump, but they're noisy and tend to overheat if they aren't gravity-fed properly. The "right" way to do it is to get an EFI-ready fuel tank with an internal pump. It looks stock from the outside, but it has a modern Walbro pump tucked inside. It's cleaner, quieter, and way more reliable.
Don't forget the Corvette fuel pressure regulator/filter combo. It's a cheap, simple way to regulate your pressure and return the excess fuel to the tank without running a bunch of extra lines.
Exhaust and Cooling
Let's talk headers. Standard small block headers will not work. You need LS-swap-specific headers designed for the second gen F-body. Because the steering box is in the way, the driver's side is always a tight fit. Some of the cheaper headers out there will hit the steering shaft, so this is one area where it pays to read the reviews before hitting "buy."
For cooling, your old radiator might be in good shape, but it's probably not up to the task of a high-compression LS, especially if you're running AC. Get an aluminum radiator with dual electric fans. You can wire the fans directly into the LS computer (ECU) so they kick on automatically at a specific temperature. It makes the car feel so much more modern when you don't have to worry about the needle climbing while you're sitting in traffic.
Why Bother?
By now, you might be thinking this sounds like a lot of work and money. And it is. But the first time you turn the key and that LS fires up instantly—no pumping the gas, no smelling like raw exhaust, no stumbling—you'll get it.
The second gen camaro ls swap changes the entire personality of the car. You get that classic muscle car look with the reliability of a 2015 Tahoe. You can take it on a long-distance road trip, get 20+ MPG on the highway (if you can keep your foot out of it), and still smoke almost anything at a red light.
It's about making the car usable. I love a period-correct restoration as much as the next guy, but there's something incredibly satisfying about a vintage Camaro that starts every single time you turn the key. No more tinkering with carburetor floats or adjusting timing every time the weather changes. Just pure, unadulterated horsepower.
Final Reality Check
Before you start, make a budget. Then, double it. It's the small things that get you: the different throttle cable, the steam port adapters, the custom air intake tube, the belt drive offsets. It adds up fast. But at the end of the day, a second gen camaro ls swap is one of the most rewarding projects you can tackle in your garage.
Take your time with the wiring, don't cheap out on the oil pan, and make sure your fuel system is solid. Once you're out there on the open road, hearing that LS sing through a set of good mufflers, you won't be thinking about the money or the busted knuckles. You'll just be thinking about how glad you are that you finally did it.