What do you do with the original Vega tachometer if you do a GM V8 engine swap?
The solution: Replace the tachometer circuit board with our new replacement tachometer circuit board calibrated for 8 cylinder engines. There are two different types, 1971-74 and 1975-77. Visual compare the type of board you have before ordering.
This circuit board is compatible with GM's HEI ignition as well as the original ignition system.