Original Tach reads correctly with this new board. Installation was straight forward and took 30 minutes.
Comes calibrated and ready to install. Select above: 4,6,8 cylinder.
Calibration will be set for an 8000 RPM tachometer. If you need a different maximum RPM, include an order note when checking out.
Chevy Vega GM V8 engine swap - This is compatible with GM HEI ignition systems - select 8cyl at checkout.
1970's-early 1990's GM Tachometer Circuit Board failure is a common problem. 99% of the time a malfunctioning Tachometer is caused by a bad Board. If your Tachometer is reading too high, too low, or is pegged low or high, it is time to replace the Tachometer Circuit Board.
Application: Chevy and GMC Trucks, various GM cars.
Installation Note: Installation is fairly easy. There is no soldering involved. Unbolt the old circuit board, bolt on this new tachometer circuit board.