View Single Post
Old 05-26-2019, 07:14 PM   #3
truckster
Senior Member
 
truckster's Avatar
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,761
Re: Yet Another Gas Mileage Question

That does seem low. My Blazer with a tired 350, TH350, 4WD, 3.73 rear and 33 inch tires was averaging a little over 11.

Where do you do most of your driving. In addition to rear gear ratio, what tire size are you running?

Also, is your air/fuel ratio somewhere near 14.7:1? Have you done a compression test on the engine?
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson
truckster is offline   Reply With Quote