No adjustments were needed. Tach is fully operational.
1969-77 GM Chevy Camaro, 1971-74 Chevy Vega, Tachometer Circuit Board.
Select engine type above: 8 cyl, 6cyl, 4cyl.)
Check your board for compatibility. It should be the 5 pin type as shown below.
Chevy Vega GM V8 engine swap - select 8cyl at checkout.
Installation Note: Installation is fairly easy. There is no soldering involved. Unplug the old tachometer circuit board, plug in the new tachometer circuit board. Includes installation instructions. Comes Pre-Calibrated.