Prerunnerkid

i have some very basic and nooby questions. I have 2002 silverado 1500 with a stock 5.3 the only things I've done to it is add AEM intake, Flowmaster exhaust and a throttle body spacer. I'm new to a lot of this motor stuff but I'm hungry to learn more. My motor just got to 134k miles and Ive curious to know what i should change out and replace at this many miles. I'm considering either throwing some serious power into this 5.3 or saving up and building up a mean 6.0 and throwing it in later. and suggestions on what i should ? Ive been researching and reading a lot on here about cams and piston and all the basic stuff to gain some serious power.


My truck also has a 4L60 and 4.11 Gears

Prerunnerkid

Thinking about a 222/222 Cam and COMP Springs

Vortec350ss

iTrader: (20)

Ditch the TB spacer. Its junk. Also, flowmaster arent great for HP... they dont flow. You need a straight through muffler design.

The cam is a good one for a 5.3, but a bit on the aggressive side unless youre all high speed all the time for an off road truck.

First order of business should be headers and a computer tune. Do the basics and hang around a little bit... you'll learn a lot. Not need to jump right into a cam just yet. Grab a trans cooler too since im sure it sees really high temps the way you use it.

53bowtie

iTrader: (6)

I would wait and do a 6.0 if it were me but it depends on your end goals and how you want to get there. What kind of power do you want to get to eventually? Do you want to do forced induction at some point?

FlowmasterMufflers

This is simply not true. Flowmaster designs, tests, and proves its products under real world conditions in the dyno cell, at the track, and on the road. All of our mufflers have been designed to provide performance gains when properly installed and used in the correct vehicle application.

Prerunnerkid

Thats a good point starting slowing with headers and a tune. I was thinking about getting the Borla Xr1 muffler since its more of a straight through. And like the other guy was saying with the 6.0 my end goals are to probably build up a nasty motor on the side with the 6.0 or 5.3 again and swap it once this 5.3 gets some more miles on it. So should i just do all of these mods once i get a new motor? and yes i would love to do forced induction later on once i have the $$

Prerunnerkid

And yeah this truck is also my DD as well but once its out in the dirt or desert its running hot and fast the whole time. i want to take care of my motors especially if i build a nice once eventually my truck will have 2 fans running to the motor.

KozzyJr

I beg to differ. I had a rust master on my 09 chevy. The only thing I noticed was drone and a dump in gas mileage. It did sound good tho

FlowmasterMufflers

Your mpg may have dropped because it was harder to let your foot off of the gas after installing such a great sounding muffler.

KozzyJr

In all honesty it drop 2 mpg on avg between a 50/50 mix of driving. Just a crappy muffler overall for flow