GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

got my 2010 today

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Old Jan 25, 2010 | 06:04 AM
  #31  
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Originally Posted by gonzo 6.0
got any performance mods done? more pics?have you ran against any of your buddys?

There is only 150 miles on this thing.
I have only done the suspension and taken the resonator out of the tail pipe.

I have headers/cats here to install but i need hpt beta 2.23 so i can atleast disable the codes the headers will set. I have ordered a vararam intake. I am not sure what I will do with the exhaust yet. It sound healthy as it is and should sound real good with the headers.
I'll do a sound clip when I put them on

Stock, it drives like a dream and has a big fat torque curve and lots of off-idle power.
Gotta get used to the 6-speed and the manual shift buttons.

No pics, salt on the road here right now, not pretty.
Will look identical to the truck in the pic except for the wheels
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Old Jan 26, 2010 | 04:26 PM
  #32  
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Originally Posted by Allgonoshow
There is only 150 miles on this thing.
I have only done the suspension and taken the resonator out of the tail pipe.

I have headers/cats here to install but i need hpt beta 2.23 so i can atleast disable the codes the headers will set. I have ordered a vararam intake. I am not sure what I will do with the exhaust yet. It sound healthy as it is and should sound real good with the headers.
I'll do a sound clip when I put them on

Stock, it drives like a dream and has a big fat torque curve and lots of off-idle power.
Gotta get used to the 6-speed and the manual shift buttons.

No pics, salt on the road here right now, not pretty.
Will look identical to the truck in the pic except for the wheels
how does it sound without the resonator?
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Old Jan 26, 2010 | 05:41 PM
  #33  
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Originally Posted by CharlyNali6.2
how does it sound without the resonator?
sounds good, definitely louder but no resonance at cruising speed.
I didn't have alot of seat time in different driving conditions to have a frame of reference
for comparison

I changed it because the oe tail pipe is kind of fugly.
I used pieces of the pipe i removed and butt welded them to the tail pipe ahead of where the resonator was and butt welded a 3.5 inch stainless tip to that.
exits at a steep angle behind the wheel, I prefer not have a big tip showing.
I will take some pics tomorrow
time permitting, I'll put my headers on.

Have you done any exhaust on yours???
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Old Jan 26, 2010 | 05:48 PM
  #34  
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Originally Posted by RXDawg
you will love the 6.2......I have 3.42 gears....I'm envious....I also wish I had transmission support.....As for the Vararam intake I think "snowflake" on here stands behind it. I would like to try it on my truck. Please let us know how it performs.
nice delivery truck dawg,
I see you have arh headers and cats, 1 3/4 or 1 7/8 ?
do you have a catback or are you running stock exhaust.
How does it sound with the headers
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Old Jan 28, 2010 | 08:26 AM
  #35  
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how easy is it to light'em up without thinking about it...........
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Old Jan 28, 2010 | 10:00 AM
  #36  
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Thanks Show,

I've got the 1 3/4 headers. I have true duals at this time with Flowmaster 40 series. They sound good just cruising around, but are loud when you give it the throttle. Had Magnaflow when first got the headers, but were way too low in the cab. The FM have much better sound in the cab.......both are loud on the truck though. The stock setup is as loud as a 5.3L with flowmasters at idle in my opinion.
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Old Jan 28, 2010 | 11:49 PM
  #37  
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congrats man any pics of the truck
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Old Jan 29, 2010 | 12:24 AM
  #38  
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Congrats on the truck.. if stealership set you up with Michellin's ... on a Vmax... they're not going to last long at all.

This prob isn't a fair comparison, but we have an '08 HHR SS that is modded to 290fwhp, so far. The car has a slight 26k mi on it, and have already changed the Michellin tires that came with it.
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Old Jan 29, 2010 | 09:50 PM
  #39  
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installed headers, took out resonator from the tail pipe. painted grill

i still have the stock muffler, it's quite loud and drones a bit at certain rpms and constant highway speed.
has a pulsing tone rather than the smooth, clean tone you get with magnaflow.
i think i'll order a 3.5 inch large body magnaflow. shouldn't be much louder but will have better sound quality


sorry for the dirty truck, it's winter














Last edited by Allgonoshow; Jan 29, 2010 at 09:59 PM.
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Old Jan 29, 2010 | 10:05 PM
  #40  
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Headers looks GREAT! What size is the Y pipe?
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