1977-1990 B-Body LS Gauge Parts

Putting an LS in a box Caprice or Impala leaves the factory oil pressure gauge without a sensor port it can use. BRP lists an Oil Pressure Adapter Fitting so a traditional gauge sensor threads into the LS. A Tach Adapter sits beside it for cars that keep a traditional tach.

Fitting for a traditional sensor
Tach adapter for distributorless LS
Sold without the BRP LS harness

Mounts, crossmember, headers and drives for the box body cars live on the 1977-1990 B-Body LS page. The LS swap gauge components hub covers every chassis.

1977-1990 Caprice and Impala LS gauge parts

Oil pressure fitting

Oil Pressure Adapter Fitting

Tach signal adapter

Tach Adapter

Box Chevy gauge parts at a glance

Oil Pressure Adapter Fitting: lets a box Chevy LS run a traditional pressure gauge sensor.
Tach Adapter: gives a factory or aftermarket traditional tach, or a shift light, an rpm signal from the LS.

1977-1990 B-Body gauge notes

Neither part carries B-Body fitment data. Both are general LS items.
The tach adapter wiring is up to you, since no BRP harness comes with it.
The 1977-1990 B-Body guide does not cover gauge hookup.

Part facts are from the BRP listings. For mounts and clearance, see the 1977-1990 B-Body LS install guide.

1977-1990 B-Body LS gauge FAQ

Which oil pressure fitting does a box Chevy LS swap use?

BRP lists one Oil Pressure Adapter Fitting for this page. It allows a traditional pressure gauge sensor on the LS engine.

Will the stock tach in a 1977-1990 Caprice read an LS?

A traditional tach needs a converted signal from distributorless ignition. The BRP Tach Adapter provides it for a factory or aftermarket tach or a shift light.

Does the box Chevy tach adapter include wiring?

No. This version is offered without the BRP LS harness, for custom wiring.