i have a 91 rs and a 350 was droped into it and im wondeinrg why all the gauges on my gauge cluster work except RPM and Speedo..[X(]
is there aand how may i fix it?... wekk the conversion mess up the accuracy of the speed and display the wrong RPM? what should i do?

 

did you change the transmission? the control for the speedo is in the tranny...the tach control, i believe is off of the crank sensor...

 

yea the RPM is totaly off. i know when to shift but everytime i start the car everything resets!. the radio and the sensors