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5.3

  1. 02-09 Vortec 5.3L V8 Engine and Drivetrain
    As said in the title I want my engine immortalized. I've read extensively on it but would like to hear tips and tricks to hopefully fill the gaps or oversights I may have. I have experience with the standard 4.8 but this engine is a bit different. My engine is an LM4 with 799 heads, same as the...
  2. Engine Tunes/Mods
    I have been eyeing these ignition coils for my Envoy. I just had a coil fail on me just last night. I want to upgrade to the best of the best, but I keep coming across these and the reviews seem good, but I need to know if anyone on this forum has them installed and the procedure of care?
  3. OEM Issues
    I have been trying to work through a rough engine idle that began after I changed the plugs and wires on my 2008 Saab 9-7X 5.3I. Besides a spark plug issue I posted about in another thread, I was looking around by the firewall tonight and that left me with several questions that I'm hoping...
  4. General
    I have an '06 Envoy Denali with the 5.3L Vortec V8 and about 6 months ago the engine seized up and I had a rebuilt one put in. There is a 100k warranty on it but now it shifts into 2nd weird.. Almost like it hesitates. The truck has around 140,000 on it and I was wondering what you all think I...
  5. Engine Tunes/Mods
    Well my 4.2 liter inline 6 threw a rod this morning and i lucked out finding a 2004 5.3 liter for 400$ with PCM and complete harness, so now its time to start the swap, I've already got a pretty good idea of everything I may need Only deal is the 5.3 came out of a pick up so I have to check my...
  6. OEM Issues
    I had my engine run low on oil for a short time. This locked up a lifter and now I am having all lifters replaced. The machanic recommended changing the cam because of the discoloration. Looks likes normal wear to me. Check out the picture below..What are your thoughts? The cam is smooth, no...
  7. OEM Issues
    I need to find a replacement for mine. I don't have $7k+ to put into it, I do not want to go Jasper, and I am having trouble locating anything used. The closest I found was from pickups, but the mechanics don't know what makes it different to chance the swap. I was also under the impression...
  8. Exhaust Mods
    I'm wondering if anyone has installed the Stainless Works Headers or True duals for the TBSS on a TB with the 5.3 (swb)? I'm thinking about doing it on mine. I've spoken to the people at Stainless works and they said the headers should work ok since the 6.0 and the 5.3 are the same but they...
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