What kind of MPG's are you guys getting?

[ls1nova71]

Originally Posted by Marty68

ls1nova71, do you think your mpg would be better if you had a lower rear gear? say 3.73 or 3.42 is your truck at too low an rpm at 70 and not up in its power range?
i have read that 3.08s with od arent the best. i also have 3.08s and am curious what to expect.

I have thought about it, and think it might help some but not sure how much. . All the other trucks ive built have had 3:73's, but I didnt check the mileage on them as much since I didn't drive them as much either. I would have already swapped it out if my truck didnt have a nice factory installed posi!(There's a problem to have, right? LOL) But on the highway I figured it would do really well, but it just doesnt do as good as I had hoped. It runs down the highway great and doesnt feel like its being bogged down by the tall gear.