A motor analyzer will give you all this info plus more. Higher end manufacturers dont really list it if their motors have adjustable timing. A lower timing can draw as little as 3-4 amps and a higher timing will pull 6-7 amps although thats towards end of the performance window.

DISCLAIMER EDIT: This advice is based on 17.5 blinky motor. Nonetheless you need a motor analyzer and side question - is it okay to attach the alligator clips to a motor on the car or do you need to unsolder it?