Can anyone say for certainty which of the two different 8 grand 70-71 E-body tachometers were used in which application.
Was the 5500 redline used in small block Cudas and Challengers, and the 6500 rpm in big blocks, or was it a 70 and 71 thing, or perhaps auto verses 4 speed.
There were two different versions but both carry the same part number...5500 redline..

4595109-54tach.jpg (375 downloads)