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RIDING LARGE
Eyes wide open, with faces up against the glass, kids on a passing school bus wondered what it could be. Amazed by the size of this land yacht, some must have wondered what it was like to pilot such a gas-guzzler, while a few couldn’t help but smile at the resounding roar of the mighty L72 427 underneath it all.

GTD Speedster
While Ferrari, Corvette and other historic vehicles may come to mind upon seeing these bodylines, the GDT Speedster stands alone as a prime example of advanced engineering, creativity and, most of all, individuality. Constructed of fiberglass over a steel frame/chassis structure, the fit and finish is as good as it gets, as it shows the real-world functionality of this one-of-a-kind machine.

GOODGUYS COLUMBUS 2007
Over the last several years, the Goodguys PPG Nationals in Columbus, Ohio, has established itself as one of the nation’s premier hot rodding events. This event, along with the Detroit Autorama and a few others, has proven to be one of the main events at which builders choose to debut new cars, and trophies are as hotly contested here as at any show in the country. But Columbus is about more than just trophies—it’s about bringing your own car, no matter what kind of shape it’s in, to hang out with the owners of the other 6,000 vehicles that will be there, and to have fun at Goodguys’ premier event.
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A Bold New Look for the Classic GM 10SI
Author
The Auto Builder Staff
Photos Courtesy of Specialty Auto Parts U.S.A., Inc.
Performance-Driven. Style-Focused.
The Slant-Edge Alternator reimagines a legendary design with aggressive, modern styling and precision CNC-machined accents that demand attention. It’s available in seven eye-catching finishes, including Chevy Orange, Black Crinkle, Cast Gray Crinkle, Red, Polished, Chrome, and the sleek and mysterious Liquid Black. No matter your build style—classic restoration or radical pro-touring project—there’s a Slant-Edge finish to match your vision.
But this isn’t just an aesthetic upgrade. Each unit features a bold Chevrolet Bowtie Emblem, available in milled and raised or recessed and painted versions, with the option of red or black finishes to perfectly complement your engine bay.
Built to Perform, Engineered to Impress
Beneath its show-stopping exterior, the Slant-Edge Alternator is a true performer. Every unit is built with 100% brand-new components and comes complete with an internal regulator, internal fan, and a single V-groove pulley. Thanks to its 1-wire hookup, installation is quick and easy—no complicated wiring harnesses or modifications required.
The alternator is factory-tested to ensure it meets rigorous quality standards and is shipped with a unique verification sheet, offering peace of mind that your alternator is ready to deliver high output and low idle drag the moment it’s bolted into place. Whether you’re powering a modern fuel-injected system, an upgraded audio setup, or a full suite of aftermarket accessories, the Slant-Edge has the juice to keep everything running smoothly.
Available Models






Raised, Milled Chevrolet Bowtie Emblem
- 141-146: Black Crinkle
- 141-147: Liquid Black
- 141-151: Polished
- 141-148: Chevy Orange
- 141-149: Cast Gray Crinkle
- 141-150: Red





Recessed & Painted Chevrolet Bowtie Emblem
- 141-152: Black Crinkle with Red Bowtie
- 141-154: Chrome with Black Bowtie
- 141-155: Chrome with Red Bowtie
- 141-153: Cast Gray Crinkle with Black Bowtie
- 141-156: Polished with Black Bowtie
A Statement Piece That Works as Hard as It Looks
The Slant-Edge Alternator is more than just a charging system upgrade—it’s a statement. With bold styling, uncompromising build quality, and serious electrical output, it’s the perfect blend of performance, personality, and precision.
CLICK HERE to learn more or browse the full lineup of parts at Proformparts.com.







