1971-1977 Chevy Vega Tach Circuit Board Small Round or Plug-Tab 4/8 Cyl

Replacement tachometer circuit board for 1971–1977 Chevy Vega factory tachometer applications. Covers both common Vega tach board styles (Small Round and Plug-Tab) and is supplied pre-calibrated based on the option you select.

Fitment:

Chevy Vega — 1971–1977 (factory tachometer applications)

Board styles supported: Small Round (typical 1971–1974) and Plug-Tab (typical 1975–1977)

Identify your tach style:

Small Round board: Small round circuit board attached to the tach movement (typical 1971–1974)

Plug-Tab board: Rectangular board on the back of the tach movement with nuts. Metal tabs for the harness connector (typical 1975–1977)

Required selection (choose 1):

Small Round – 6000 RPM, 4-Cylinder

Small Round – 6500 RPM, 4-Cylinder

Small Round – 7000 RPM, 4-Cylinder

Small Round – 6000 RPM, 8-Cylinder (engine swap-with compatible RPM signal feed)

Small Round – 6500 RPM, 8-Cylinder (engine swap-with compatible RPM signal feed)

Small Round – 7000 RPM, 8-Cylinder (engine swap-with compatible RPM signal feed)

Plug-Tab – 7000 RPM, 4-Cylinder

Plug-Tab – 8000 RPM, 4-Cylinder

Plug-Tab – 7000 RPM, 8-Cylinder (engine swap-with compatible RPM signal feed)

Plug-Tab – 8000 RPM, 8-Cylinder (engine swap-with compatible RPM signal feed)

Highlights:

Pre-calibrated based on your selected option

Plug-in installation — no soldering or special tools required

Direct replacement for the original GM tach circuit board (matching the selected board style)

Installation instructions included

Manufactured in the USA with quality components

Before you buy: Select the option that matches (1) your board style (Small Round or Plug-Tab), (2) your tach’s RPM scale (6000/6500/7000/8000), and (3) the engine currently in the vehicle (4-cylinder or 8-cylinder swap).

Limitations: Intended for factory tachometer circuit board applications. Selecting the wrong board style, RPM range, or engine option may affect fit and calibration.