Tahoe/Burb guys give me some MPG figures

[THEFERMANATOR]

Originally Posted by Stinky_Hooker

My speedo is actually correct with the tires. It was always off with 245s, then got a little closer with 265s and is right on with the 285's. Its strange, thats chevy quality control for you I guess. Ive checked it with 2 different GPS's.


I do run it with OD off (in 3rd gear) when Im around the hunting property with all the hills and such. Pretty flat land where I live it. I still run it off occasionally, it definately feels like it "should" then. The overdrive is relatively useless in this truck with the current setup.

Don't always believe the speedo, but you need to check the odometer. 58 is 55 in mine, 62 is 60, 68 is 65, but 70 is 70. My odometer o nthe other hand is DEAD ON at all speeds. I adjusted mine using EFILIVE in my tuning though, so I can get it down to within 1 tire revolution per mile.