1948 Cadillac Madam V

The 1948 Cadillac Madam V project utilized four cars in total to create one master piece including two 1948 fastback coupes, a used 2015 Cadillac ATS-V and a brand new 2016 Cadillac ATS-V, all provided by Mr. Rydell. The Rings began by completely tearing the late model cars down to the uni-body and lengthening the 2016 chassis by 14 inches to accommodate the longer ’48 body.  The 2016 ATS-V is a complicated modern vehicle with many interconnected systems that do not respond well to meddling, so Mike and Jim Ring made it a point to not disturb the ATS-V’s fuel systems and only lengthened the wiring with GM approved connectors to simplify the car’s transition and preserve the functionality of the modern amenities.

One of the design goals for “Madam V” was to make it look like something Cadillac would have built, so Mike and Jim incorporated and blended design cues from the old car and the new one in such a way that they would appear to be factory. For example, the hood, which took more than 600 hours alone to handcraft out of carbon fiber, carries over the ATS-V’s signature hood vent and the centerline crease of the 2016 car’s hood. The Rings even went so far as to make the radiator shrouding in aluminum and then coat it to look like it had been made from plastic.

“Madam V” is powered by the Cadillac 3.6L DOHC V6 Twin Turbo engine, outputting 464hp and kept running smooth by Royal Purple engine and transmission oil. The motor is also kept at the perfect temperature with help from Prestone coolant. Although the Madam retains most of the ATS-V exhaust, custom stainless steel Flowmaster tail pipes give the car a true performance exhaust note.

The Madam also retains many of the technology features from the ’16 ATS-V including the info and media control with full color display, rear vision camera, Push-to-Start, rain-sensing wipers and even OnStar auto crash response.

In addition to the ingenious engineering that went into fusing the 1948 coupe and the 2016 ATS-V, Ringbrothers also added a number of custom touches to the build. “Madam V” features custom rear view and side view mirrors as well a roof mounted 360-degree camera from Gentex that integrates into the satellite radio antenna. The ’48 rolls on a set of P204 HRE forged wheels sized at 19x8 in the front and 20x11.5 in the rear wrapped in Michelin Pilot Super Sport tires sized 245/45/19 up front and 325/30/20 out back.

To finish the car and highlight the enormous amount of body work, the exterior of “Madam V” was coated in a rich, custom BASF Glasurit color named “Vivi White.”

Vehicle Specs


Engine:  Cadillac 3.6L V6 Turbo

Transmission:  8-Speed Automatic

Rear End Manufacturer:  Cadillac ATS-V

Rear End Type:   Cadillac ATS-V

Drive Shaft:  Cadillac ATS-V

Engine,Differential, and Transmission Oil: Royal Purple



Cadillac ATS-V


Seats:  Cadillac ATS-V Recaro Performance Seats

Door Panels: Upholstery Unlimited

Gauges:  Cadillac ATS-V

A/C System:   Cadillac ATS-V


Stereo System

Head Unit, Speakers, Amplifier:  Bose

Wheels and Tires

Wheel Manufacturer/Model:  HRE 

Front Wheel Size: 19” X 8”

Rear Wheel Size:  20” X 11.5”

Tire Manufacturer/Model:  Michelin Pilot

Front Tire Size:  245/45/19

Rear Tire Size: 325/30/20



Paint Manufacturer:  BASF

Paint Color:  Vivi White

Paint Booth: Global Finishing Solutions (GFS) Ringbrothers Performer Booth

Tail light lens:  Ringbrothers Custom Billet



Manufacturer:  Cadillac ATS-V (Brembo)



Battery Location:  Trunk

Battery Manufacturer:   Cadillac ATS-V



Header Manufacturer:  Cadillac ATS-V

Exhaust Manufacturer:  Flowmaster



Radiator, Fans:  Cadillac ATS-V

Fluids:  Prestone


Chassis and Suspension

Cadillac ATS-V

Corporate Sponsors




Royal Purple

Product Sponsors and Partners


California Car Co.

Classic Instruments


Gentex Corporation

GFS – Global Finishing Solutions

Heat Shield Products

Holley Performance

HRE Wheels

Miller Welding

Painless Wiring

Upholstery Unlimited   

Vintage Air

Ringbrothers Proud Sponsors:

  • 3M
  •  Hurst
  • Flowmaster
  • B&M
  • BASF
  • Get My Website Quote
  • Prestone