5.3

I've gotta 2011 Silverado with the 5.3 and I'm wondering if you can simply remove the cats to do a full custom exhaust without any problem. Sent from my iPhone using Tapatalk

What exhaust systems are you guys running on your NNBS trucks? I've gotta 2011 Silverado with the 5.3. Any suggestions on full kits? Muffler types? Anything will help. Thanks. And if you have a sound clip post it up! Sent from my iPhone using Tapatalk

I picked up some low mileage ( 58,000 to be exact ) 243s off a Z06 this weekend and I had a quick question about milling them before I run them over to Texas Speed & Performance for some head work. I have been told that milling them .030 will retain the factory compression with the 5.3 dished...

I recently purchased a set of the FlexFuel Injectors PT#12580426 which I have read are about 36 pounders? I ordered the Racetronix EV1 Mini Delphi to EV6 USCAR adapters and plan on putting them in this weekend and getting a retune done. I know these injectors are more then I will need...

All I lack to install my edc on my Silverado is the bracket to hold the York next to the alternator, if anyone has one they are selling please let me know ASAP thanks guys!

My 03 5.3 uses about a quart of oil per thousand miles. And trans is weak. Would it be more economical to 6.0/4l80e swap it or rebuild the 5.3? Edit: Keep in mind I'm planning on tradong it for a 6.4 superduty or an lmm next year Sent from my leather heated ass

Got one of the bigger things finished that I wanted to do the truck done today, got my hd clip all buttoned up and just need the lower valance, still have a lot to do, need to lower it more (5/7), build the motor (torn between a 6.0 and rebuilding the 5.3 money depending) doin all the paint and...

Sorry if I posted this in the wrong place, but I have a tbss intake I'm gunna put on my 5.3 and I wanted to know what kind of options are out there for the tbss cover? Does a newer Silverado cover fit? I'm just not a huge fan of covering the whole motor, I like to see what's under there and I...

Well first off my name is Dustin and I hale in the Beaumont, TX region. Im not new the forum world nor am I to GM's. I currently own two at the moment. My super clean 02 Avalanche Z66 2wd that is my (all stock) daily routine paw paw ride. Then I have my 06 TBSS that I am currently right in the...

I've been tinkering with GM's since I picked up an 04 Impala SS almost 10 years ago. My current money pit is an 07 TBSS. Too many mods to list. I drag race it and drive it on nice days. Ran 11's last year but it's getting a cage and new blower for this season. It's currently at the welder's but...

Just found this place. Have an 07 burb with the crappy afm 5.3. Was wondering about a 6.0 swap. Gas mileage wouldn't be much worse. Has a160k miles on it and is using a quart of oil in about 2k miles. Also have a couple duramax's as well.

Central WI Well Im finally breaking down and trying to clean the garage out... tons of parts to sell. D1sc procharger, air to air intercooler, truck bracket, belt, red race valve, intercooler plumbing, siemens 80 lb injectors, wideband o2, boost gauge, nnbs pillar gauge pod. Air aid air...

Right now I have longtubes with offroad Y and 3" into a 18" Magnaflow with a 3" tail pipe and its ridiculously loud and raspy. Maybe because of the Cam/stall/gears I have but I just cant deal with it and the kiddo is complaining. So I guess its time to try and quiet it down a little. I have...

Blower motor came on by itself and the heat setting is maxed out to the hottest setting. Not able to change the fan speed or heat setting. Dealer replaced something and it fixed it, but then it went again and dealer fixed it again. Pain in the butt for sure. Also, the front end makes a...

Decided to start a thread Current things I have done to it consist of 2.5 level 1.5 body color matched tows and tail gate Handel also black bumper caps black 13 grill with Billit bow tie 20x10 fuels and 295 toyo mt 15% tint all the way around with brow 20 in led bar in bumper slot and 5 k Hid...

Hey guys! This is gonna be a thread to document the progress on my Sierra, it's called a bucket of mixed emotions because it's been up and down with this thing since the day I bought it. It's a 2003.5 ECSB 4wd GMC sierra work truck edition, it was a municipality truck I bought for 3600 bucks...

Some of you know I bought a LS1 long block and was looking at rebuilding it for my 2005 Silvy CCSB. After doing some reading and research I decided to get rid of it. I traded the block and crank for a 2002 5.3 block and crank, so I still have all the LS1 pistons and stuff. I have built many...

Hey guys, looking for input from fellows a little more knowledgeable than myself. I may be able to get a used L76 from an '08 suburban I believe and want to know what you all think is needed to make it work in an '02 truck? Looking to keep the original wiring harness and pcm from my truck...

LS1 Aluminum Block ( Austin, Texs ) SOLD... I bought this LS1 to build as a project for my truck but after some careful consideration I want to stick with an iron block. That being said I am going give someone the opportunity to pick it up! I am not going to give it away but I will take a...

Sold. Make: Chevrolet Model: Silverado Engine: 5.3L Drive: 4x4 Miles: 155K Options: Bose, leather, dual digital climate, power/signal mirrors Modifications: 295 STT's, Tru-Cool 40K Cooler, Mag Hytec transmission cover, Platinum Escalade cluster, Escalade Handles, 87/89 Black Bear tune, Access...