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The HEAR & NOW
Delve into the world of classic truck customization as we guide you through the installation of a Custom Autosound USA-5 unit into a 1972 Chevy C10. Learn how to seamlessly integrate modern sound technology into your vintage ride without altering its original aesthetics.

Broncos Storm Pigeon Forge
The 3rd Annual Great Smoky Mountain Bronco® Stampede thundered into Pigeon Forge, Tennessee, on August 15–16, 2025, and for two days straight the LeConte Center was wall-to-wall Broncos. Old, new, stock, modified, lifted—if it had a Bronco badge, it had a place in the herd.

A Southern Tradition
Johnson City, Tennessee didn’t just host a car show—it briefly turned into a rolling museum of American hot rodding. The 51st NSRA Street Rod Nationals South took over the Appalachian Fairgrounds on May 8–9, 2026, delivering two full days of traditional street rods, customs, and classic builds that reflected decades of craftsmanship and culture.
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PRODUCT SPOTLIGHT: SuperMatic 4L75-E Four-Speed Automatic Transmission
In Stock NOW at Gandrud Performance Parts
Author
The Auto Builder Staff
Photos courtesy of Gandrud Performance Parts
This isn’t some warmed-over rebuild. This is a Chevrolet-engineered, factory-remanufactured performance transmission, built with high-output crate engines in mind—including LS-series V8s and traditional small-block Chevy engines. It’s based on the 4L65-E/4L70-E family but leveled up with durability upgrades that let it confidently handle up to 650 lb.-ft. of torque—without breaking a sweat.
Built for Power. Tuned for the Street.
Chevy Performance didn’t just refresh this thing—they gave it a full workout. Inside, you’ll find five-pinion gearsets, a heat-treated stator shaft, and an induction-hardened turbine shaft built to take punishment. An eight-plate 3-4 clutch pack and high-strength input housing help it grab and hold power where lesser transmissions wave the white flag.
Add in a larger 2-4 band, a high-capacity servo, and performance-calibrated valve body, and you’ve got a unit that shifts hard, holds torque, and stays alive even when you’re giving it the beans.
The Gear Ratios You Want
With a first gear at 3.06, second at 1.62, and a highway-friendly 0.70 overdrive, the 4L75-E hits that sweet spot between burnout launches and comfortable cruise RPMs. It’s got the guts of a race-ready trans but with street manners—and it’s compact enough to fit where a 4L80-E just won’t go.
Think REMAN Means Used? Think Again
This REMAN unit from Chevrolet Performance isn’t just refurbished—it’s battle-tested. You get OEM quality, GM-backed durability, and performance upgrades that often surpass brand-new builds. No core return. No guesswork. Just a fully dialed-in transmission ready to bolt in and blast down the road.
Bolt-In Confidence
You’ll need an electronic controller to run this beast—pick one based on whether you’re running fuel injection or a carburetor setup. And if you’re using a Gen V LT engine, you’ll want the appropriate bellhousing kit. Either way, this unit gives you modern control with old-school toughness.
In Stock and Going Fast
These SuperMatic 4L75-E REMAN transmissions are flying off the shelves at Gandrud Performance Parts. If you’re planning an LS swap or tired of watching your old trans cry every time you hit the throttle, now’s the time to upgrade.
👉 Click here to order yours before they’re gone.
Because let’s be real—when you drop the hammer, you want your transmission to say, “Is that all you’ve got?” Not “Please make it stop.”
SuperMatic 4L75-E REMAN At a Glance…
Similar in design to the 4L65E/4L70-E, this 4L75-E electronically controlled four speed overdrive transmission is suitable for “LS” series V8 engines producing up to 650 Ft. Lbs of torque. Does Not include torque converter.
Features:
• Increased horsepower and torque capacity
• Heavy duty upgrades including 5 pinion gearsets
• Heat treated stator shaft splines
• Induction hardened turbine shaft
• Eight-plate 3-4 clutch packs
• Unique, high-strength input housing
• Specific valve body calibration
• Higher-capacity servo
• Larger 2-4 band
• Gear ratios: 1st-3.06, 2nd-1.62, 3rd-1.00, 4th .070

