He Paid $11,000 for a Rotted 1970 Chevelle — Then Dropped In a $30,000 Engine That Nearly Broke It on the Drive Home

A gutted, rust-eaten 1970 Chevelle bought for $11,000 just got a $30,000 crate big block dropped in during a Texas Airbnb build. The decades-old Turbo 400 almost couldn’t handle it — and the drive home wasn’t pretty. The video hit 2.2 million views in a single day.

Most restorations start with a plan. This one started with an $11,000 gamble on a 1970 Chevrolet Chevelle so far gone it needed new floor pans, new quarter panels, and a frame repair before it could even think about rolling under its own power. Then the crew behind the Westen Champlin channel did something that had nothing to do with restraint: they dropped in a $30,000 crate big block pushing somewhere in the 800-to-900 horsepower range — built entirely in the driveway of a rented Airbnb during a brutal Texas August. The car survived. The decades-old Turbo 400 automatic bolted behind it very nearly didn’t. By the time the team nicknamed the finished car “Poptart” and pointed it toward home, nobody watching was sure it would make it.

Built in a Rented Driveway, Not a Shop

There’s no shop in this story — just a rented Airbnb, a trailer full of tools, and a Texas summer the crew describes fighting nearly as hard as they fought the car itself. The Chevelle arrived rough: body panels rotted through, structural rust bad enough to need frame repair before anything else could happen, and a factory drivetrain nowhere near capable of handling what was coming. Mechanic Wade — credited by fans in the comments as the real star of the build, with more than one viewer suggesting he deserves his own channel — tore the weak original motor out and started prepping the engine bay for a swap that dwarfed the car’s original spec sheet by a factor of two or three. No lift, no climate-controlled bay, no backup shop to retreat to if something went wrong — just a driveway, hand tools, and a deadline.

The video leans into the chaos as much as the mechanical work. There’s a memorable run-in with a local character fans nicknamed the “King of Arlington,” a fire-extinguisher count that says everything about how the build actually went, and a garage-less, air-conditioning-less grind that the channel’s audience clearly responded to. Comments on the video single out the humor as much as the horsepower — the kind of hour-long build documentary that people say they cleared their schedule for. It pulled roughly 2.2 million views in its first 24 hours alone and has already climbed past 4.5 million total, a number that tells you the story landed with people who’ve never swapped an engine in their life, not just the diehard big-block crowd.

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Westen Champlin’s channel has built a reputation on exactly this kind of project — buying rough, cheap iron and pushing it somewhere its original engineers never intended, whether that’s a Cummins-swapped luxury car or, in this case, a rust-bucket Chevelle turned into an 800-plus-horsepower street car in the space of a build trip. The appeal isn’t polish. It’s watching a plan survive contact with reality, one stripped bolt and one heat-exhausted afternoon at a time.

The 1970 Chevelle SS Chevy Built to Beat Everyone

The 1970 Chevelle SS is one of the genuine high points of the muscle car era, and the reason has a name: LS6. Chevrolet’s 454-cubic-inch LS6 big block was factory-rated at 450 horsepower and 500 lb-ft of torque — officially the most powerful regular-production engine Chevrolet had ever built at the time. It was serious enough that Chevy required either a heavy-duty Muncie M22 “Rock Crusher” four-speed or a specially reinforced Turbo 400 automatic just to survive behind it. Out of 53,599 SS Chevelles built for 1970, only 4,475 left the factory with an LS6 under the hood, which is why real ones command serious money at auction today.

This particular car isn’t one of those numbers-matching LS6s — it’s a rusted-out survivor bought for parts-car money and rebuilt around a modern crate engine instead of a documented factory drivetrain. That distinction matters: the original 1970 Turbo 400 in a car like this was never built to survive anywhere near 800-plus horsepower, which is exactly what put it under so much strain once the swap was finished. For a deeper look at how far off-factory big block builds can push a 1970 Chevelle, MuscleCarFan’s deep dive into a 468 stroker-swapped Chevelle SS covers a similar off-book approach to chasing LS6-beating power.

The Chevelle nameplate itself only ran from 1964 to 1977, but the 1970 model year is widely considered its high-water mark — the last year before insurance premiums and emissions rules started strangling big-block muscle across the industry. That narrow window is part of why builders keep coming back to 1970 Chevelles specifically, LS6 pedigree or not: it’s the last Chevelle body style that could carry a 454 without any factory apology for it. A rough, non-numbers-matching example like this one is exactly the kind of car that lets a builder chase that same spirit without the six-figure price tag a real LS6 now commands at auction.

Why “Poptart” Isn’t Just Another Restomod

What makes this build stand out isn’t the horsepower number — plenty of channels chase bigger figures. It’s that none of it happened in a proper shop. No lift, no climate control, no shortage of things that could have gone wrong in that kind of heat, and the crew still got the car running, driving, and named before the trip home. The test drive told the real story: by the third fill-up, at just 103 miles, the Chevelle was averaging 6.9 miles per gallon, and the original Turbo 400 — carrying nearly double what any factory 1970 Chevelle transmission was designed for — started losing third gear under load. It made it back anyway, which is its own kind of victory.

It’s also a reminder of why the 1970 Chevelle keeps pulling builders back in more than fifty years later. The LS6 set a bar that Chevrolet itself never topped again in the muscle car era, and every backyard big-block swap since has been chasing some version of that same number. Poptart doesn’t have the LS6’s pedigree or its documentation — it has a rusted body, an oversized crate motor, and a story that a lot of enthusiasts clearly wanted to watch unfold in real time.

Watch the full video above and let us know your thoughts in the comments.