1978-1988 Monte Carlo, Cutlass, Regal, Grand Prix and El Camino
G-Body digital dash and gauge cluster layouts
G-Bodies are one of the most popular platforms for LS swaps and turbo builds, and the factory gauges were never much to look at. A digital dash gives a Monte Carlo SS, Cutlass or Regal the gauges the build deserves.

Suggested start: Street Eight in the Carbon Chrome style.
Customize this layoutTypical G-Body builds
LS swaps are everywhere in the G-Body world, many of them on a Terminator X, along with turbo V6 Regals and big-block cruisers. Street builds want a clean speedometer and tach; boosted cars want boost, air/fuel and oil pressure where they can see them.
Gauges worth having in your G-Body
- Speedometer (GPS)
- Tachometer
- Boost / vacuum
- Oil pressure
- Coolant temperature
- Air/fuel ratio
Pick a gauge in the designer, choose what it shows, and the numbers, range and redline fill in for you. Sensors you wired to the dash yourself, like a fuel level sender, work too.
A custom G-Body gauge cluster without a custom shop
Most G-Body gauge cluster upgrades mean picking from a few off-the-shelf designs or paying a shop for a one-off. With a Holley Pro Dash you design the whole screen yourself: gauge faces, colors, numbers, warning lights and your logo. Change it any time with a USB stick. See how to design a custom gauge cluster.
Will it fit my G-Body?
Gauge Garage makes what's on the screen, not the mount. Your layout works on both the 12.3 inch and 6.86 inch Pro Dash. How the dash mounts in your G-Body depends on your dash panel or bezel, so measure before you buy.
Getting it onto your dash
Download your layout, copy it to a USB stick, and load it on the dash. The install guide walks through it step by step.