8.1 GM mileage
#2
Re: 8.1 GM mileage
Originally Posted by JasonSmith
What kind of mileage are you guys seeing with the 8.1's? I'm looking at a 4x4 2500 Burb and am just curious.
#7
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Re: 8.1 GM mileage
2001 gmc dually,
13 to 14, empty
8 to 10 towing 38 ft donzi
13 to 14, empty
8 to 10 towing 38 ft donzi
#9
Re: 8.1 GM mileage
Originally Posted by Sydwayz
2002 8.1 w/ 4spd Auto 4L85E in 2500 Avalanche (same as Sub 2500).
Lots of bolt on goodies.
11 daily driving.
6.5-8 towing 12K lbs, depending on flat Interstate or hills/mountains.
Lots of bolt on goodies.
11 daily driving.
6.5-8 towing 12K lbs, depending on flat Interstate or hills/mountains.
#10
Re: 8.1 GM mileage
Oh yeah, 4.10 gears. I have 17" wheels and 265/70/17 E tires on it now. The Suburban will tow MUCH better with these changes:
Wider wheel/tire combo. (Go to an 8 or 9 inch wide wheel.)
Add rear airbags to help the rear suspension. (Do a search on this on OSO, lots of info.)
2" Rear wheel spacers. (Will spread out the rear wheel track to match the front wider stance, and also help towing stability.)
Everything IU have done to my Avalanche 2500, can be done to the Suburban 2500. (Exact same frame/running gear.) Check this thread for more info on what I have done:
http://www.offshoreonly.com/forums/s...d.php?t=109513
Wider wheel/tire combo. (Go to an 8 or 9 inch wide wheel.)
Add rear airbags to help the rear suspension. (Do a search on this on OSO, lots of info.)
2" Rear wheel spacers. (Will spread out the rear wheel track to match the front wider stance, and also help towing stability.)
Everything IU have done to my Avalanche 2500, can be done to the Suburban 2500. (Exact same frame/running gear.) Check this thread for more info on what I have done:
http://www.offshoreonly.com/forums/s...d.php?t=109513
Last edited by Sydwayz; 08-24-2005 at 09:18 AM.