View Single Post
  #15  
Old February 26th, 2014, 04:56 AM
tommyduncan tommyduncan is offline
Senior Member
 
Join Date: Jul 2013
Location: Boulder City NV
Truck: 62 3/4ton 305 Hydramatic
Posts: 189
Rep Power: 114
tommyduncan is on a distinguished road
Default Re: Better gas Mileage

Quote:
Originally Posted by 66birdman View Post
anything is possible and I am no expert on gears but when I bought the truck I got it from the original owners son who pulled it out of the barn after it sat since 1995. He told me it was all stock. Guess it could have been some sort of special order or something.
Mine has 4:10s and I get 8mpg. Usually when I look at the tach I am around 3100rpm, which is about 70mph. Since I posted earlier I realized that I never go 55... in this town you will get run down by a cement truck at that speed. I brought my GPS and the speedo runs a little slow also.

Last edited by tommyduncan; February 26th, 2014 at 05:03 AM.
Reply With Quote