On the 99 Projects channel, old machines aren’t just rust and stories. They’re proof that engineering used to mean something. This time, the guy behind the channel tackles a real piece of American trucking history: a Kenworth W900A. Built between 1967 and 1982, it became legendary for that long hood, boxy look, and straight-up mechanical honesty.
This particular truck? It had been sitting, forgotten, one step away from the scrapyard. Work starts the way it always does on this channel. Slow and steady. No theatrics. Just going through the basics: checking the frame, looking at wiring, testing air lines, and seeing if the old diesel under the hood has anything left to give.
Under that hood sits a Cummins NTC-855 Big Cam. It’s a 14-liter inline-six diesel that made around 350 horsepower and 1,250 lb-ft of torque back in the day. Drivers loved it for being bulletproof and mechanically simple. Behind it, a 10-speed Eaton Fuller transmission delivered that deep, low-rev grunt these old American trucks were known for. Together, they made the W900A the kind of truck you could drive across the country without thinking twice.
Systems are basic, but unforgiving. Corroded terminals, cracked hoses, stale fuel. Any of it can kill a project before it even starts. But with every bolt turned and every connection cleaned, the Kenworth gets a little closer to waking up.
There’s a rhythm to working on old mechanical stuff that you can’t fake or rush. Weight of the wrench in your hand, the smell of oil warming up in the block, and the sound when voltage finally hits the starter. When that first puff of smoke rolls out of the exhaust, it’s not some big moment. It’s just proof that patience and precision still beat the clock.
This Kenworth restoration isn’t about trophies or Instagram. It’s about keeping old-school craftsmanship alive, one stubborn diesel at a time. Will this old W900A actually roll under its own power, or is just getting it to fire up already enough of a win?
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A locked Cummins, a frozen cab, and a tree growing through the frame make this 4070 revival one brutal challenge.