1969 Chevrolet Camaro G-Code

Wisconsin native and “G-Code” owner Don Atkinson always had a desire to own a 1969 Camaro RS. He loved the design by GM, but he didn’t want just any 1969 Camaro – he wanted a truly unique, one-of-a kind Camaro that no one else in the world would have, so he went to Ringbrothers.

“G-Code’s” transformation began with the power plant – an LS3 motor from Chevrolet. Wegner Automotive beefed up the horsepower with a Whipper Supercharger and an increase in displacement to 416 cubic inches, bringing the output up to nearly 1,000hp. All those ponies are then sent through a Bowler-built Tremec six-speed transmission and a Centerforce Clutch. The engine is kept cool with help from Prestone coolant and everything from the motor to the transmission are running at peak condition thanks to lubricants from Royal Purple.  Exhaust is expelled though a set of custom headers designed by Ringbrothers and then into the custom Flowmaster stainless steel exhaust system.

But “G-Code” isn’t all about straight-line speed.  To make sure the car was equally as adept at going around a corner, Mike and Jim Ring used a Detroit Speed full suspension setup including a Hydro Form front clip and Quadra-Link rear with AFCO shocks on all four corners. To bring “G-Code” down from triple-digit speeds, massive Baer Brakes six-pot calipers were installed at all four corners with 15-inch rotors in the front and 14-inch rotors in the rear. The Rings worked with the folks at HRE Performance Wheels in California to design a custom set of forged wheels sized at 19x10 in the front an 20x13 at the rear, inspired by the IROC-Z Camaro wheels of the ‘80s and wrapped them in Michelin Pilot Super Sport tires measuring 275/35/19 up front and 335/30/20 out back.

The cabin of the first generation Camaro was carefully designed with driver comfort in mind. The interior upholstery was custom crafted by Upholstery Unlimited and is kept at the perfect temperature with a Vintage Air climate control system.

Ringbrothers walked a tight rope with the body of the “G-Code” Camaro. Mike and Jim Ring wanted to stay within the confines of what makes a ’69 Camaro a ’69 Camaro, but also wanted to push the boundaries of style to make the car stand apart. Every part of the car was customized including the bumpers and the grille, while the hood was crafted using hand-laid carbon fiber. To highlight the body work, “G-Code” was coated in a custom BASF Glasurit hue named “Blue Print.”

Vehicle Specs:


Engine:   Wegner 416 LS3

Forced Induction:  Whipple

Engine Oil:   Royal Purple

Engine Oil Weight:   5W30

Transmission:  Bowler Tremec 6 Speed

Transmission Oil:  Royal Purple

Rear End Manufacturer:  John’s Industries

Rear End Type:   GM 12 Bolt

Drive Shaft:  QA1

Differential Oil: 80-90 Royal Purple



Type:  Rack and Pinion  

Manufacturer:  Detroit Speed

Steering Column:  Ididit

Power Steering Fluid:  Royal Purple



Seats:  Upholstery Unlimited Custom

Gauges:  Classic Instruments

A/C System:  Vintage Air


Stereo System

Head Unit, Speakers, Amplifier:  JL Audio


Wheels and Tires

Wheel Manufacturer/Model:  HRE 

Front Wheel Size: 19X10

Rear Wheel Size:  20X13

Tire Manufacturer/Model:  Michelin

Front Tire Size:  275/35/19

Rear Tire Size: 335/30/20



Paint Manufacturer:  BASF/Glasurit 90 Line

Paint Color:  Blue Print

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

Tail light lens:  Ringbrothers Custom Billet



Fuel Type:  Premium

Fuel Pump:  Aeromotive

Fuel Tank/Cell:  Aeromotive

Fuel Management:   Holley Dominator

Fluids:  Royal Purple



Front Caliper Specs:  Baer 6R-15”

Rear Caliper Specs:  Baer 6R-14”



Battery Location:  Trunk

Battery Manufacturer:  Optima



Header Manufacturer:  Custom Ringbrothers

Exhaust Manufacturer:  Flowmaster



Radiator:  AFCO

Fans:  Spal

Fluids:  Prestone



Chassis:  Detroit Speed



Front Suspension Manufacturer:  Detroit Speed 

Front Suspension Type:  Hydro Form

Rear Suspension Manufacturer:  Detroit Speed

Rear Suspension Type:  Quadra Link

Shock Manufacturer:  AFCO

Sway Bars:  Detroit Speed


Corporate Sponsors

Royal Purple




Product Sponsors and Partners




ARP Automotive Racing Products

Baer Brakes

California Car Co.


Classic Instruments


GFS – Global Finishing Solutions

Heat Shield Products

Holley Performance

HRE Wheels

Miller Welding



Painless Wiring

Upholstery Unlimited

Venture Machine & Tool, Inc.    

Vintage Air

Wegner Motorsports

Ringbrothers Proud Sponsors:

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