Ken Hurst and Dwight Giles of the Bay Area Engine Modelers brought a fully functional 6.3 cubic inch OHV V8 to the 2015 Good Guys West Coast Nationals — supercharged, running on nitro, and producing 16 horsepower from a displacement that fits in the palm of your hand. More than 1.1 million people have watched the footage since, and the sound it makes explains why. This is what genuine machining craftsmanship looks like when the goal is a muscle car engine at 1:7 scale.
Ken Hurst and Dwight Giles of the Bay Area Engine Modelers built something at the 2015 Good Guys West Coast Nationals that stopped people mid-stride — a fully functional OHV V8 at just 6.3 cubic inches of displacement, producing a documented 16 horsepower, with a supercharger stacked on top, and a sound that the title of this video does not oversell. At over 1.1 million views, the footage has proven that the combination of genuine machining craftsmanship and a muscle car engine configuration scales down to crowd-stopping effect regardless of the size of the audience.
Precision at a Scale That Leaves No Room for Error
This is not a novelty in the sense of being a toy or a display piece. It is a precision-machined working internal combustion engine built to the same mechanical principles as the full-size V8s in the cars surrounding it at the show, scaled down to a size that fits in both hands. The crankshaft, connecting rods, pistons, valvetrain components, and carburetion all function together within fractions of a millimeter, requiring both the machining skill and the patience to work at that level of precision consistently over what must have been an extraordinary number of hours.
Scale model engine building occupies a demanding corner of the machinist’s world. The tolerances required to make a miniature engine run reliably tighten as the displacement decreases, because the same percentage variation that a production engine can absorb becomes a catastrophic clearance error at smaller scales. Getting it to start reliably, idle cleanly, and survive extended running without destroying itself represents a genuine engineering achievement regardless of the displacement involved.
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Why an OHV V8, and Why It Matters
The choice to build an OHV V8 configuration — pushrods, rocker arms, the complete architecture of the Hemi and LS engines that define American muscle car performance — is a statement about what the builders were honoring. At 6.3 cubic inches, the entire displacement would fit inside a single cylinder of a 426 Hemi. The sound it makes when running on nitro suggests the spirit made the transition at full scale.
Watch the full video and share your thoughts below.
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Umm – Not a Hemi.
Sure looks like wedge heads to unless they’ve designed a hemi.
Looks wedge to me too. I guess the only way we can tell is to see them pulled.
Awesome
No damn Hemi. But cool as hell!!
Go kart and lawn mowing heaven lol
Daryl Diana Menesdorff this looks awesome
Maybe good for the Honda ?? 😳
hmmmmm nah it wouldn’t handle the extra torque
Tom Mcclurg
That’s awesome
Still sounds meaner than a Honda
Cool
3 to 1
Hemi??? Looks a lot like a small block chevy mini to me you moron who posted this…and how do you know it’s on nitro???? Stupid f**k!