The 1966 Cadillac DeVille Convertible stands as a testament to American automotive grandeur. This specific example, however, takes that classic elegance and injects it with a significant dose of modern muscle and customization. The conversion, centered around a powerful 6.0L Vortec V8 engine, transforms this drop-top from a stately classic into a genuine restomod cruiser. It’s a compelling blend of mid-sixties styling and contemporary mechanical reliability.
Classic Form Meets Modern Function
This DeVille maintains its unmistakable, long-hood, short-deck proportions while sporting a fresh appearance. The original body color is now covered by an eye-catching blue vinyl wrap, giving the car a distinct, refreshed aesthetic. Key factory elements like the vertically stacked quad headlights and pronounced rear tailfins are perfectly preserved. This provides a striking visual contrast to the mechanical updates.
Suspension and Braking Upgrades
Handling and stopping power were significant focus areas during this comprehensive build. The classic body now sits lower, thanks to an overhauled suspension featuring aftermarket springs that drop the ride height by about two inches. Furthermore, an aftermarket front sway bar was installed to improve cornering stability. Safety is enhanced with a crucial upgrade to power-assisted disc brakes on the front axle. This replaces the old factory setup, offering much-needed confidence.
The Modern Heart of the Beast
The biggest change to this 6.0L Vortec 1966 Cadillac DeVille resides beneath the lengthy bonnet. The original engine was replaced with a robust 6.0-liter LQ4 Vortec V8, sourced from a 2002 GMC Yukon. This engine swap occurred in 2021, and the unit was prepped with rebuilt cylinder heads and replacement internals. These included a new camshaft, oil pump, and various seals to ensure reliability. Power is fed through a custom air intake and an aluminum radiator keeps temperatures in check. The throaty sound exits via a single-outlet exhaust system.
Transmission Tuned for Performance
Mated to the powerful Vortec engine is a 4L60E four-speed automatic transmission, also sourced with the engine. The transmission received internal modifications to handle the increased output efficiently. It was rebuilt with a performance-oriented shift kit, Stage 2 clutches, and a Corvette servo. These enhancements create a more responsive and durable drivetrain for the modern V8. The transmission tunnel required modification to accommodate the fitment of this newer automatic unit.
Inside the Custom Cabin
The interior of the DeVille continues the classic-meets-custom theme with its refined cabin space. The original front and rear benches are upholstered in clean white leather, complemented by a blue upper dash pad and matching carpets. The power-adjustable front bench seat and power windows provide necessary convenience features. The automatic climate control system remains a luxurious touch from the era. A slight imperfection is noted with some cracking visible on the dashboard.
Modern Tech and Driver Readouts
The driver interface retains the original tilting and telescoping steering column topped with a Cadillac crest. However, the instrumentation is modified for the new powertrain. The horizontal 120-mph speedometer now operates via a GPS module for accurate readings. Additional aftermarket Stewart Warner gauges, displaying coolant temperature and oil pressure, are mounted on the center dash. The cabin’s ambiance is enhanced by an aftermarket Bluetooth sound system. This system includes JBL door speakers and dual trunk-mounted 12-inch Rockford Fosgate subwoofers for quality sound reproduction.
Performance Specifications Overview
The LQ4 Vortec V8 engine, in stock form, typically generates around 300 horsepower and 360 lb-ft of torque. Given the internal rebuild and custom components, the output of this particular setup is likely near or above those factory ratings. This strong power output, combined with the four-speed 4L60E automatic, gives the DeVille modern highway capability. This potent combination ensures smooth acceleration and reliable cruising at modern road speeds. The power-assisted disc brakes are crucial for managing the substantial power increase.
Summary of the Vortec-Powered DeVille
This heavily modified 6.0L Vortec 1966 Cadillac DeVille Convertible offers a unique ownership proposition. It successfully merges the timeless luxury and style of a classic DeVille with the reliability and performance of a modern LS-based drivetrain. The custom suspension, enhanced braking, and integrated audio system complete the restomod vision. This car is a distinctive and powerful machine that provides an engaging driving experience unlike a standard classic.
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Source: bringatrailer.com
