Originally Posted by BlownChevy

anyone want to bring one to Magna Charger? I will show you how to add 120 RWHP more

Originally Posted by lsx10

if anyone wants to know why the 5.3 and even some 6.0s get better mileage in the full sizes it is because it requires less throttle to get the same speed and accelleration. aka a 4.8 requires more rpms to get the power of a 6.0, more rpms=more air/fuel mixture. those of us who like getting put back in our seats will usually get better mileage out of a more powerful engine because we push the less powerful engines farther.

in a lighter truck it takes less power to get to speed and to put you into your seat, therefor a 4.8 would work just fine, and it would have more then enough tq for the little truck. it would be about the same as a 5.3 in the fullsize, the 5.3 about the same power to weight ratio as the 6.0 in the full size(keep in mind this depends on the model).

I dont feel like getting all the hard numbers but to anyone one with common sence this makes sence.

Originally Posted by 07 z71 silverado

excatly, its just like gears when you go from 3.42 to 4.10's you will more than likely get better gas mileage in town because you are using less petal to get up to speed because its easier on the engine so therefore you get better gas mileage in town.

Originally Posted by AdioSS

um, no...

Originally Posted by venomhp

Im surprised they are coming out with this with all of the gas stuff going on

Originally Posted by la grape

my friend did an i5 single cab to an 5.3 full bolt on