1973-1977 A-Body LS Gauge Components

Owners of 1973-1977 A-Body cars swapping in an LS can hold on to a traditional tach and oil pressure gauge with two BRP parts. The Tach Adapter reads the distributorless ignition for a tach or shift light, and the Oil Pressure Adapter Fitting gives a traditional sensor somewhere to thread in.

Keeps a traditional tach working
Harness left out for custom wiring
Mounts a traditional pressure sensor

High mount brackets, crossmember and headers for these cars are on the 1973-1977 A-Body LS page. The LS swap gauge components hub covers the other chassis.

1973-1977 A-Body LS gauge parts

Tach and shift light adapter

Tach Adapter

Oil pressure gauge adapter

Oil Pressure Adapter Fitting

The two 1973-1977 A-Body gauge parts

Tach Adapter: lets a factory or aftermarket traditional tach or a shift light run off the distributorless LS.
Oil Pressure Adapter Fitting: adapts the LS to a traditional oil pressure gauge sensor.

1973-1977 A-Body gauge notes

There is no harness here. Route and connect the tach wiring to suit your car.
Chevelle, Cutlass, Regal and El Camino swaps share these parts with BRP pages for other cars.
Gauge wiring does not appear in the 1973-1977 A-Body guide.

Information on these parts is from the BRP listings. The 1973-1977 A-Body LS install guide covers fit in the car.

1973-1977 A-Body LS gauge FAQ

Can a 1973-1977 Chevelle or Cutlass run its tach on an LS?

Yes, using the Tach Adapter. It turns the distributorless LS ignition into a signal a factory or aftermarket traditional tach, or a shift light, can use.

Is a BRP LS harness part of this tach adapter?

No. This listing is offered without it, for custom wiring.

What lets a 1973-1977 A-Body run an oil pressure gauge with an LS?

The Oil Pressure Adapter Fitting. It lets the LS take a traditional pressure gauge sensor.