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SUPERCHARGING FOR BIG POWER
Building an engine that produces more horsepower than its stock configuration can be done in many ways. However, supercharging has proven to be one of the best ways to make the most horsepower over stock. Superchargers are air pumps that force a “super” charge of air into an engine, which in turn allows the engine to make more power. A Roots supercharger or blower is a sealed case with two rotors inside. It is driven through the crankshaft by belts and pulleys, causing the spinning rotors to force compressed air into an engine.


TPI: TODAY’S PERFORMANCE INCREASE
There are few modifications that can be made to an engine that can give both increased performance and better fuel economy. In these days of increased gasoline prices (nearly $4.50 per gallon), fuel mileage is an important consideration for vintage trucks that owners consider their daily drivers. For many reasons, vintage pickups are becoming not just weekend toys but also weekday workers. And one of the best ways to increase both performance and mileage is with an electronic fuel-injection system.
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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.







