
THE AUTO BUILDER
Featured

CHECKING AND CONTAINING FLUIDS
Fluids are the lifeblood of the vehicle. We need to contain those fluids yet still be able to monitor the fluid levels. Our older readers can remember the days before aftermarket flexible dipsticks or silicone caulk were available. The only option in those days was to use an OEM dipstick and dipstick tube. If you needed to shorten the tube, a hacksaw was the tool of choice. If you cut 4 inches off the tube, you then cut 4 inches off the dipstick and ground a couple of notches in the side of the dipstick to note “full” and “add.” Gaskets could be sealed with Permatex, but they had to be used as there was no such option of placing a bead of silicone caulk on the mating surface and assembling the parts.

Beech Bend’s Best at the Tri-Five Nationals 2025
This year marked 70 years since the 1955 Chevy hit the streets, kicking off a three-year run that forever changed the automotive landscape. And judging by the rows of spotless Bel Airs, hardtop sedans, wicked gassers, and full-tilt pro-touring machines, the legend is alive, well, and meaner than ever. Everywhere you turned, there was another masterpiece—whether it was a flawless restoration, a ground-shaking drag car, or a radical custom that pushed the envelope.

PEEL ‘N STICK
When dismantling your project car, you probably ran across the crumbling remnants of the original insulation. Old cars are notoriously “leaky” when it comes to heat and sound barriers, making them louder and hotter than the typical daily driver. Sometimes a loud exhaust system overrides the road noise, but you’ll always notice when your air conditioning system never seems to keep the cabin cool. If you’re in the midst of an interior refresh, or a full restoration, it’s a great time to consider new insulation.
Spotlighter
POPULAR READS
-
Product Spotlight: Bill Mitchell Products Aluminum LS Engine Block
-
PRODUCT SPOTLIGHT: 60-66 Chevy C10 Fresh Air Vent Block Off Plate
-
Product Spotlight: Pyramid Optimized Design Sequential Aurora Taillight for 1964½–1966 Mustang
-
PRODUCT SPOTLIGHT: Cam Covers for GEN/3 Coyote from Pyramid Optimized Design
PRODUCT SPOTLIGHT: Slant-Edge 100 Amp Alternators by Factory PerformanceTM Parts
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.







