Hello once again. I made a post earlyer but got deleted and not sure why i changed the topic from mpg"s to what it is now. I have a 3/4 ton 59 apache with a list of all the new stuff i put. Crate 350 long block 260hp New tko600 .64od Ram air air filter Pertronix 3 Electric fan 1406 edelbrock carburetor Timing 34 total Full time vacume =10 mpg highway This set up has 460 miles on it. Do i have to wait a couple thousand miles before i get true mpgs? This is my first ever brand new motor to deal with so i really would like to know what you guys are getting and how? What am i doing wrong? This is driving at 65 highway about 2k rpm 2100 rpm new tires that are 31 3/4" and rear end i believe is a 4.56.