Everyone Swaps Out a Barracuda’s 318 for Something Bigger — This 1968 Mopar Kept Its Original Small-Block Instead

A 1968 Plymouth Barracuda was supposed to get a simple 318 refresh. Instead, the small-block’s hidden problems forced a full drivetrain removal — and turned a routine job into one of the more unusual builds on the channel.

Walk into almost any Mopar shop with a tired 318 under the hood of a 1968 Plymouth Barracuda, and the advice is nearly always the same: pull it, drop in something bigger, and never look back. That is exactly what did not happen to this green 1968 Barracuda. Its owner, a collector who already keeps a matching green Mopar project running through the same channel, handed this car to Dead Dodge Garage with an unusually old-fashioned request: rebuild the small-block that was already there instead of replacing it. What started as a routine freshen-up turned into a full drivetrain pull once the shop found out how much that little engine had been hiding, and the “quick rebuild” turned into something closer to a rescue mission.

The Build Everyone Said Not to Bother With

Dead Dodge Garage’s host, Jamie, has fielded requests for a performance-built 318 almost since the channel started, and this project finally gave him the excuse to take one on. The car’s owner, identified in the video only as Mark, had already supplied every part he thought the build might need, trying to avoid the parts-chasing delays that slowed down a previous project on the channel. The plan looked simple on paper: pull the 318, go through it top to bottom, and put it back in running strong. Instead, the team ended up doing a complete drivetrain removal just to figure out what was actually wrong underneath the valve covers, turning a weekend-sized job into a far longer process.

Commenters who watched the teardown picked up on the same thing the shop found in person: this is not the kind of Barracuda people usually fuss over. One viewer summed up the general reaction perfectly, noting that most owners pull a 318 in exchange for something bigger, and it was refreshing to see one saved instead of scrapped for a swap. Others pointed out the subtle sheet-metal and trim differences between the 1967 and 1968 Barracuda that come up during the walkaround, along with a running joke about the project’s “mystery box” of surprises waiting under every bolt that came loose. More than one viewer even said the line about expecting bad news and being prepared for it was the most quotable moment in the whole video.

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A Car That Almost Nobody Builds a Video Around

The 1968 Barracuda was the second model year of Plymouth’s redesigned “fish” generation, a full rebody from the compact, Valiant-based original that had launched back in 1964. The new-for-1967 platform came in three body styles — notchback hardtop, fastback, and convertible — and this particular car is a notchback, the style one commenter compared favorably to the slightly later Road Runner for its clean, unfussy lines. That redesigned generation ran from 1967 through 1969, before Plymouth moved the Barracuda onto the all-new E-body platform for 1970, the version most people picture when they hear the name today.

For 1968, Plymouth’s headline performance offering was the Formula S package, which paired heavy-duty suspension, wide-oval tires and a front fender badge with either the 340 small-block or the 383 big-block, depending on how much a buyer wanted to spend above the base price. The 318 was never part of that package. It was simply the standard V8 in the regular Barracuda lineup — the engine buyers got when they wanted a V8 without paying extra for performance options. The 318 itself was part of Chrysler’s LA-series small-block family, a design that had debuted in 1964 at 273 cubic inches before the factory grew it to 318 cubic inches for broader use across the Plymouth, Dodge and Chrysler lineups later in the decade.

It is worth pointing out just how ordinary this particular car would have looked sitting on a dealer lot in 1968. There was no fender badge announcing a performance package, no upgraded suspension, and no big-block rumble at idle. It was simply a Plymouth compact with a small-block V8 and column shift automatic, the kind of car that was bought to be driven to work rather than raced on weekends. Decades later, that very ordinariness is what makes it interesting: it represents how most Barracudas were actually optioned when they rolled off the line, rather than the performance-package exception that collector culture tends to celebrate.

Why a Base-Engine Barracuda Almost Never Gets This Kind of Attention

That base-engine status is exactly why 318 cars like this one have become so much rarer than their original build numbers would suggest. The Formula S cars with their 340s and 383s are the ones that show up at auctions and command attention, which means many surviving 318 Barracudas were either parted out to keep other restorations on the road or quietly swapped for bigger engines over the decades to chase that same performance image. A numbers-matching 318 that has survived more than five decades without being yanked for a 340 or a 383 is, by this point, the unusual car rather than the ordinary one — which is precisely the point several commenters raised when they thanked the shop for keeping this one intact.

That resale pattern plays out across the Mopar hobby more broadly. Parts cars get picked over first for their sheet metal, their trim, and their VIN-matched documentation, while the drivetrain underneath is treated as an afterthought unless it happens to be one of the famous big-blocks. A 318 sitting in a basic hardtop rarely gets the kind of attention this one received on camera — usually it is simply pulled, set aside, and replaced with whatever the next owner wants to chase. Seeing a shop treat that same engine as worth saving, worth diagnosing bolt by bolt instead of discarding, is part of why this particular upload resonated with as many longtime Mopar viewers as it did.

What the Teardown Actually Found

Once the drivetrain was out, the scope of the job grew well past a simple carburetor cleaning and a fresh set of gaskets. The video walks through the engine coming apart piece by piece, with Jamie narrating each new problem as it surfaces rather than pretending the job was ever going to be straightforward. That honesty is part of why the comment section leans so heavily on phrases like “that escalated quickly,” paired with praise for showing viewers how to cope with surprises along with how to actually turn a wrench. One longtime viewer even joked that no matter what the correct modern term is, he has been calling the small cylindrical plugs in the block “freeze plugs” for forty years and has no intention of stopping now.

It also helps that the car itself is unusually clean for what it is. Several viewers singled out the simplicity of the factory engine bay, noting that it is the kind of uncluttered, no-frills layout that makes a car genuinely appealing to drive every day rather than just show off at a cruise night. One commenter from Germany recalled owning a nearly identical 1968 fastback in the same green with the smaller 273-cubic-inch version of the same engine family back in the early 1990s, a reminder of just how many of these modest small-block Barracudas quietly circulated around the world long before anyone thought to call them collectible. For a Mopar fan, watching a plain-Jane 318 get the same careful attention normally reserved for a 340 or a Hemi is its own kind of reward — and a sign that the definition of what counts as a worthwhile muscle car project keeps getting wider as the original cars keep getting scarcer.