get someone to go down the hiway with you side by side,
raise your hand to mark where you want you rpm to be,
then he can look at his speedometer and give you a pretty good idea of your speed...
you have a 5:14 rear end with a 70 350 transmissison, bet your true speed an't much..
what happen to the four speed in it..
Last edited by joker; 05/07/2014 4:45 AM.