Tachs are set up for #s of cylinders. Therefore as long as the tach you have is correct for the number of cylinders you have, you're in good shape.The speedo runs off a drive in the tailshaft of the transmission via cable to the speedo.I'm not real well versed in the 71-73s but you may be able to find a factory tach set up for your car that does replace the clock. Good Luck
__________________ 65-2&2, 63 Falcon vert, 32 coupe, 76f-250 4&4,72 Ranchero GT-Some is good,more is better,and too much is just enough. |