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EXHAUSTIVE RESEARCH
When the Datsun 240Z was introduced at the end of 1969, car enthusiasts around the world took note. After all, here was a car that put many of the long-established sports car favorites into a tailspin, both on the street and in several racing venues.

GOING PRO
Producing horsepower requires two major ingredients, namely, air and fuel. Of course, the two must be supplied in the correct proportions and at the proper time; but improving power is a simple matter of adding airflow. Naturally, additional fuel will be required once the airflow is improved, but the first item on the horsepower priority list should always be more airflow.

BAD BOWTIE
Some guys love their Chevys so much that they’ll go out of their way to flush out and record every bit of their cars’ histories. Such is the case with Gene Lavine of Excelsior Springs, Missouri. Lavine is 65 going on 35. A car guy since he was 16, he served his country as a jet fighter pilot and then went on to fly for the Federal Aviation Administration. He also has a Ph.D. and now is vice president of a company that manages collections for more than 30,000 businesses.
Spotlighter
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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.

