Easy ways to gain a little power on a 4.0?

[DILLARD000]

Hmm. Is there anything you can keep?

The rear view mirror & glove box door should be perfectly fine after 19yrs!

 

[gw33gp]

I have to say the easiest and biggest bang for the buck that gives significant gains is a tuner to reflash the computer. The key here is having the right tune. Some of them do nothing or very little. It by no means come close to a supercharger but is way less complicated and costly.

I have done other mods that may work with the reflash but by themselves provide little to no improvement.

 

[SenorNoob]

Why!? Has nobody mentioned shorter tires? Cheapest way to better acceleration. Which is what most people really want if they are honest.

 

[DILLARD000]

Why!? Has nobody mentioned shorter tires? Cheapest way to better acceleration. Which is what most people really want if they are honest.

I should have; many years ago swapped factory 255.70r16.AllSeason tires to smaller 245.70r16.MudSnow tires on same rims\wheels.
Improved LoEndTorq & WinterTraction.
With 4.10 differentials, truck in 4wLo will plow snow up icy 8% grades without touching gas.
Young meatheads don't like this though, it don't mix with fantasies of monster tires crawling over 6ft boulders.