Few engines have earned a more devoted following among home mechanics than the Chevrolet small-block V8 — and for good reason. If you’re new to wrenching and hunting for a project car, the choice of powerplant matters almost as much as the car itself. Steer toward a Mazda rotary and you’ll quickly discover just how radically its design differs from a conventional piston engine. Chase a bargain-priced Ferrari and you may end up with a very expensive piece of yard art. The lesson is the same either way: start with something that has deep roots, a massive community, and parts on every shelf.
That path leads straight to the Chevrolet small-block — an engine family spanning six generations from 1954 to today. It has powered everything from the Camaro and Corvette to the Silverado pickup. Any version is a solid starting point, but the 350 cubic-inch (5.7-liter) variant is the one enthusiasts keep coming back to — popular, well-understood, and remarkably free of mechanical surprises.
A Look At The Small Block 350
350 Small block LS1Chevrolet
The story of the Chevy small block starts in 1954 with the development of the 265 cubic-inch (4.3-liter) V8, production-mounted into Corvettes and Bel Airs. A few iterations later, Chevrolet was looking to build a higher-performance version of the engine block, starting with the 1962 Corvette’s 327-cubic-inch (5.4-liter) V8, then the de-stroked 302 (4.95-liter) for the 1967 Camaro Z/28, and finally the L48 — a 350-cubic-inch variant intended to function as an all-around powerplant for everything from muscle cars to pickups.
1967 L48 350 CID Chevy Small Block Engine Specs
Displacement
5,733 cc / 350 cubic inches
Bore
4.0 Inches
Stroke
3.48 Inches
The L48 was the original version of the 350, first sold in the Camaro Super Sport from 1967 to 1969. The engine also found its way into the Chevy Nova and, well, pretty much everything else Chevrolet was producing at the time — the Caprice, Impala, and El Camino, and even an Australian Holden Monaro.
The original L48 had a long life cycle, powering Corvettes all the way up to 1980, right through the Malaise era, though it saw some adjustments along the way. The compression ratio was lowered from 10.25:1 to 8.5:1 in 1971, and the engine was producing 190 horsepower by the time it was retired from production.
The Last Production 350s Rolled Off The Assembly Line In The 2000s
350 small block in a 1999 Chevrolet TahoeBring a Trailer
More than a dozen iterations of the 350 would follow over the years. The 1970 Camaro packed a 250-hp L65. A mid-1970s performance version, the L82, produced 225 hp in the Corvette. The final version of the engine, the L31 Vortec 5700, powered Chevy SUVs, trucks, and vans — and even the Oscar Mayer Wienermobile — from the late 1990s into the early 2000s.
L31 Vortec 5700 350 CID Chevy Small Block Engine Specs
Displacement
5,733 cc
Bore
4.0 Inches
Stroke
3.48 Inches
Compression Ratio
9.4:1
The Vortec 5700 can produce up to 350 hp and 350 lb-ft of torque, depending on the application. However, 2003 marks the official end of the vintage small block that started in the 1950s. The 5.3-liter LM7 and the 6.0-liter LQ4 replaced the 5700. The older powerplants remain widely available, including as crate engines. No matter how you want to source one, there are plenty of 350-cubic-inch small-block V8s out there.
By the early 2000s, Chevrolet was packing its remaining 5700s into the Chevrolet Express/GMC Savana cargo van. The final mainstream passenger vehicles carrying an L31 include the 2000 Cadillac Escalade and its mid-market counterparts, the 2000 Tahoe and 2000 GMC Yukon. Used examples of these models are plentiful and, with more than two decades on the clock, can often be found at very reasonable prices. A low-mileage 2000 Escalade commands a premium, but higher-mileage examples are available for considerably less.
You’re Not Going To Run Into Any New Problems With A 350
350 cid small block Chevy crate engineChevrolet
The 350 is regarded as a fairly simple engine to work on, comparatively speaking. The basic architecture of the engine dates back to the mid-century. The design has versatility in mind, with applications suitable for cars, trucks, SUVs, and vans. Truth be told, it could be the most complicated engine ever built and we would still be recommending it as the easiest project for a first-time V8 tinkerer, simply because the powerplant is so commonplace. Here’s what that means.
- You’re never going to be the first person to encounter a new problem with the 350. The engine has been around for more than half a century, resulting in endless support on forums such as HotRodders.com, subreddits like r/MechanicAdvice, and from automotive YouTubers like Vice Grip Garage. And if you really hit a wall, every mechanic in the world has seen one of these — so wherever you go for help, the technician should know how to fix the problem.
- You can find a hundred 350s in every junkyard on the planet. If you need an intake manifold or another part for a 5700 and don’t want to wait on shipping, just dig through the many HD Silverados and Suburbans at your local yard and you’ll find what you’re after.
- Compatibility is rarely a problem. Almost any 350 can swap parts with a dozen other versions without issue.
- The aftermarket support is endless. The 350 has seen several generations of hot rodders and tuners. It’s not hard to find superchargers and turbochargers, as well as performance alternators, water pumps, or anything else for a custom build.
- You probably have a few friends who have worked on a 350, meaning those folks can be your own personal consultants just a phone call away — until they get tired of you and say “just look it up on the internet already!”
While the 350 can be cited as the easiest V8 to work on, no at-home engineering job is without its challenges. With older 350s you’re going to encounter the same issues you would with any decades-old engine — worn-out gaskets and gunk in the fuel lines — so you’ll want to start your journey with a thorough inspection and address anything that needs replacing or extensive cleaning.
You Can Find A 350 In Almost Anything
350 Small block in a 1955 Chevrolet Bel AirBring a Trailer
We’re on record calling the small block the most important V8 ever built. It practically powered the entire American highway system during several decades of the 20th century. The list of production applications is enormous, and we haven’t even touched on the marine versions of the engine. Volvo Penta and Mercury Marine both produce boat motors based on the L31, meaning you could potentially pull parts from a boatyard.
The LT-1 is the most powerful production version of the 350, producing 370 hp with an 11:1 compression ratio. It’s a muscle car powerplant at heart, initially powering the 1970 Corvette and Camaro Z/28. As for the most powerful custom 350, there’s some debate about where to draw the line. A tuned 350 might be able to safely handle 420 hp, according to Chevrolet’s listing for the crate engine, and aftermarket tuners offer setups with upward of 600 hp. Fully custom builds can go even further.
To get an idea of what’s possible with aftermarket blocks, the team at Street Machine built a supercharged 350 cranking out an incredible 1,000 hp on methanol using a Dart Little M block, and it sounds like a fighter jet taking off.
Realistically, if you’re looking to do some hot rodding, you might want to set your sights on a milder tune. A stock of parts, a free weekend, and a box full of tools should be enough to give a 350 a healthy upgrade. Leave the supercar builds to people who can afford to pay for the damages if the powerplant explodes on its first test run. If you’ve never wrenched on a V8 before, your future self will thank you for keeping it simple.
Sources: Chevrolet, GM, AutoTempest.
