Hello im new here and im just trying to get some input on my 03 sierra that I just purchased. Its a rc truck that needs a sport look.
4.8ls

Things that I have done since purchase

clean clean clean
clean engine bay really good
change oil
change transmission fliud and filter
debadged with eraser wheel
took off pin stripes with eraser wheel

Things I would like advice on
Chrome or alloy
size tire with wheels
roll pan or no roll pan
engine modifications bolt ons to imprive performance

I have been searching for most of this stuff but I would like the opinion now because things change time to time. ..thabks for the help in advance...tried to post pics will try later cause I was unsuccessful doing so

 

2" drop shackles in the rear, tahoe 20s with a < or equal to 30" tire, yank stall converter, ride-along or dyno tune. no roll pan

That will get you started

 

I can speak to this part- Roll pans look really great, but when using my truck as a truck I do sometimes miss a bumper on it. Paint your factory bumper before getting a roll pan. If you still want a roll pan after that, go for it.

 

Dont spend time modifying the 4.8. 5.3's are 500 bucks and bolt in. 6.0's are a grand and do the same. You can spend a grand on intake/exhaust/tune or swap ij something that will actually haul a little *** and leave much room for improvement.
Fuel filter, diff service, coolant service/thermo, brake flush, power steering flush.

 

thanks you guys...I will consider everything you guys has expressed to me...so thegarrettgoines you think 4.8 and 5.3s are a waist of time...dang I just sold my tahoe 20s alloy wheels...thanks guys

 

I was thinking about the 2/4 belltech kit would that work or should I just get the 2" drop in rear zero2sixT

 

What are your goals and budget? A reliable daily driver that's fun, a 400hp street racer, or a weekend track machine with 10's or 11's in mind?

 

Even stock, the 4.8 likes boost

 

It is a waste of time to throw boltons at and expect anything out of. I dont know what your goals are but if you want it to scoot without dumping 3k into it, swap it. 5.3's are alright but if your there you may as well get your moneys worth.

 

IMO, the lower the better. Belltech is a good kit to go with. Probably springs, shackles, and hangers. Should look and ride good.

My truck right now is running ~2/4 drop. Its got 2" hotchkis drop springs in front. And 2" drop shackles in the back, with a leaf spring removed. 28" tires in the front, 29" tires in the rear. Probably went too short with the 28". Just didn't want to run a 10" wide tire up front. Going to add a knuckle up front and put my hangers on the rear. I added a pic.

I wouldn't say 4.8s and 5.3s are a waste of time. All depends on budget and goals, as mentioned earlier. I say get the stall converter and the tune first. Those two mods offer a huge bang for the buck. Then think about cams, heads, engine swaps, or forced induction.