truck tuning

[heavypulling]

if i go the truck ls1 i will just use the 4.8 i have and then latter get a 408 block to replace the 4.8 block. right now i just need power and good mileage. i already know that the 6.0 doesn't get great mileage, my grandpa's truck never gets better than 16 on the highway. even my 350 could pull that kind of mileage, not as much power but still. the 4.8 gets 18-22 mpg on the highway. but if anyone has any more suggestions keep them coming, i really do appreciate all the impute and advice, since i still haven't made any set decisions, if anyone has a suggestion on another engine to use you may be able to change my mind.

[TxStVanWilder]

<div class='quotetop'>QUOTE(1993chevy &#064; Jan 4 2007, 05&#58;54 PM) [snapback]78329[/snapback]</div>

if i go the truck ls1 i will just use the 4.8 i have and then latter get a 408 block to replace the 4.8 block. right now i just need power and good mileage. i already know that the 6.0 doesn&#39;t get great mileage, my grandpa&#39;s truck never gets better than 16 on the highway. even my 350 could pull that kind of mileage, not as much power but still. the 4.8 gets 18-22 mpg on the highway. but if anyone has any more suggestions keep them coming, i really do appreciate all the impute and advice, since i still haven&#39;t made any set decisions, if anyone has a suggestion on another engine to use you may be able to change my mind.
[/b]

i got my aeroforce gauge yesterday and i was using the MPG function... my truck a 5.3, cam, headers, ORY, and a nelson tune, i was gettin roughly 20-25 mpg depending on speed, wind, how flat the road was... i could hold a steady 23 mpg... i dont know what kind of milage you could get out of a 4.8... but thats something to think about