<div class='quotetop'>QUOTE(1993chevy @ Jan 5 2007, 06:48 PM) [snapback]78447[/snapback]</div>the truck my grandpa has is a 2002 1500HD with the 6.0 4l80e and 4.10 gears. that is why it gets no more than 16 highway, my truck also has 4.10 gears so i really don't want that engine just to get the same mileage. also it is alot cheaper to get a 350 and install, plus i can get 17 maybe 18 with the vortec heads. but thanks for the info, maybe a truck that isn't stock will get better. please keep the info coming i really do appreciate everyones input it does help.
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You also have to realize, that our OBS trucks are much lighter than the newer style trucks. And that in its' self will help with fuel economy.
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