Slippery Sedan
July 16, 2023
THE AUTO BUILDER
Featured
ENGINE BAY PREP AND PAINT
We learned that Underground Motorsports in Little Rock, Arkansas, was going to build one fast daily driver, so we thought we’d take a peek and drop some knowledge for you. We were looking for any tech procedures that may illustrate for readers how a car of this sort is built from scratch.
Hail to “The King”: Richard Petty’s “Outlawed” Hellcat Unveiled at HPX 2025
The crowd at HPX 2025 in Charlotte was already buzzing, but when the cover came off Richard Petty’s “Outlawed” Hellcat, the energy hit a whole new gear. Built by Petty’s Garage to honor the 60th anniversary of the legendary street HEMI, this jaw-dropping Dodge Charger is unlike anything else on the road—or the track.
AIR SUPPLY
Air conditioning is a luxury that most early truckers agree they can’t be without, especially when they reside in a hot part of the country. But those big, clunky compressors, huge receivers hanging below the dash, bulky hoses running all over the place and extra wires showing are some of the reasons why air conditioning has deterred hardcore rodders for years. Of course, Vintage Air has eliminated those concerns with an excellent add-on system that not only works well, but also coexists with your engine compartment and interior aesthetics.
Vintage Air has kits that are designed for specific applications as well as universal kits. Its kits provide all of the required mounting hardware, brackets, vents, hoses, fittings, ducting, electrical wiring and switches needed to get you through your project. If you have any problems, Vintage Air has a tech support line that is second to none. You have a choice of either the internet or telephone (weekdays only).
Spotlighter
PRODUCT SPOTLIGHT: Intellitronix Analog Gauge Panel for Squarebody GM Trucks (1973–1987)
If your 1973–1987 Chevy truck’s dash looks like it’s still stuck in the Carter administration, it’s time for an upgrade.
Author
The Auto Builder Staff
Photos courtesy of Intellitronix
Bring your Squarebody’s dash into the modern era with the Intellitronix Analog Replacement Gauge Panel (AP6004) — a killer upgrade that blends classic analog style with next-gen performance and precision.
Show-Stopping Style and Function
The black polycarbonate face with its subtle brushed stroke finish instantly transforms your interior from dated to show-ready. Inside, you’ll find a full set of precision analog gauges — 160 MPH speedometer, 8K tachometer, oil pressure, water temp, voltmeter, and fuel level — all backed by a Lifetime Factory Warranty.
Performance That’s Built In:
- One-button speedometer calibration works with any tire size, gear ratio, or transmission.
- Built-in trip meter, high-speed recall, 0–60 time, and ¼-mile ET tracking.
- Automatic nighttime dimming for perfect visibility in any light.
- Works with mechanical or electronic transmissions — or go all-in with GPS precision.
Upgrade Your Setup with These Premium Add-Ons
- GPS Speedometer Sending Unit: Plug-and-play, 3-wire hookup with built-in GPS accuracy. Works with 4000, 8000, or 16000 PPM speedometers — no recalibration, no guesswork. Perfect for trucks running custom gears or oversized tires.
- Universal Gauge Harness: Clean up your wiring the right way. This 8′ color-coded harness includes quick-connects for easy removal, plus connectors for water temp, oil pressure, tach, volt, fuel, speedo, dash lights, turn indicators, and high beam. Professional look. Hassle-free install.
- LS Swap Kit: Dial in your modern GM powerplant with everything you need — 12mm & 16mm bushings plus a 10K-½ watt resistor. Keeps your LS talking perfectly with your Intellitronix setup.
Easy Install and Complete Package
🛠️ Includes: All sending units, sensors, hardware, and an acrylic faceplate — everything you need to get your gauges live and accurate fast.
Why It Rocks
BOTTOM LINE: If your ’73–’87 Chevy or GMC truck still rocks that tired factory cluster, it’s time to step it up. The Intellitronix Analog Gauge Panel delivers show-stopping looks, race-ready accuracy, and bulletproof reliability — all in one slick package.
💥 LIFETIME WARRANTY. LEGENDARY LOOKS. NEXT-LEVEL PERFORMANCE.
👉 Grab yours now at IntellitronixGauges.com and transform your dash today.
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