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08 LS3 A6 Mods

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Old Dec 3, 2008 | 05:59 PM
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Default 08 LS3 A6 Mods

Hi everyone. I just purchased LG Longtubes, Vararam Cold Air Intake, Underdrive pulley and 160 degree thermostat, are there any other nice, quick, easy, cheap mods that i can buy and install on the car that will add some more power? Thanks.
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Old Dec 3, 2008 | 06:31 PM
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Originally Posted by DonBuralli
Hi everyone. I just purchased LG Longtubes, Vararam Cold Air Intake, Underdrive pulley and 160 degree thermostat, are there any other nice, quick, easy, cheap mods that i can buy and install on the car that will add some more power? Thanks.
Have Cory Harris port your intake manifold and throttle body.

LS2 Portworks, he is a supporting vendor here as well. Usually that mod is good for up to 15hp. If you are looking for more power install a camshaft, want more, heads and for even more a blower.
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Old Dec 3, 2008 | 08:41 PM
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Serriously, you should go ahead and grab an A6 cam since the UD pulley is such an involved job to install, you have to remove the steering rack for both installs. Once the pulley is off, there is only about 15-20 more minutes to yank the cam (assuming the rockers are off by then).

Otherwise, just port the intake and TB.

You will need a tune though for best results.
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Old Dec 4, 2008 | 05:20 PM
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Originally Posted by JayplaySS2
Serriously, you should go ahead and grab an A6 cam since the UD pulley is such an involved job to install, you have to remove the steering rack for both installs. Once the pulley is off, there is only about 15-20 more minutes to yank the cam (assuming the rockers are off by then).

Otherwise, just port the intake and TB.

You will need a tune though for best results.
I dont have enought money to get cam/charger/ or anything like that. I also want to keep the mods easily changeable if warranty/emmisions need to be done.
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Old Dec 4, 2008 | 07:15 PM
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Originally Posted by DonBuralli
I dont have enought money to get cam/charger/ or anything like that. I also want to keep the mods easily changeable if warranty/emmisions need to be done.

Gotcha, I would still install the UD but it may be $$ if you plan on swapping it when visiting the dealer for service. You may want to skip it all together
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Old Dec 4, 2008 | 07:29 PM
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Originally Posted by DonBuralli
I dont have enought money to get cam/charger/ or anything like that. I also want to keep the mods easily changeable if warranty/emmisions need to be done.
If you had it tuned for the LTs and intake you have already blown the warranty.
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Old Dec 4, 2008 | 09:19 PM
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Originally Posted by 8850
If you had it tuned for the LTs and intake you have already blown the warranty.
and altho it isn't an absolute requirement, from what I've read here, a tune is probably the route to go. which then blows the warranty on the drivetrain, but then the headers might do it, too.
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Old Dec 5, 2008 | 09:00 AM
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Originally Posted by tjwong
Have Cory Harris port your intake manifold and throttle body.

LS2 Portworks, he is a supporting vendor here as well. Usually that mod is good for up to 15hp. If you are looking for more power install a camshaft, want more, heads and for even more a blower.
I know a guy (Glennhl) who only got +5 rw hp on the dyno with a Cory ported stock intake including tuning for it. He did not pick up anything in the 1/4 mile either. Getting a FAST intake with a real gain of +30 rwhp and .30 gained in the 1/4 mile is a much better option albeit at about $800.00 cost for great gains vs $275.00 for nada.

Last edited by siffert; Dec 5, 2008 at 09:12 AM.
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Old Dec 5, 2008 | 10:08 AM
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Originally Posted by 8850
If you had it tuned for the LTs and intake you have already blown the warranty.
This is not true.... It depends on the dealer and your service writer... My dealer is mod friendly to me.. LT's, tune and TC in my Trailblazer SS when it threw a rod... New motor under warranty. No questions asked
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Old Dec 5, 2008 | 10:09 AM
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Originally Posted by siffert
I know a guy (Glennhl) who only got +5 rw hp on the dyno with a Cory ported stock intake including tuning for it. He did not pick up anything in the 1/4 mile either. Getting a FAST intake with a real gain of +30 rwhp and .30 gained in the 1/4 mile is a much better option albeit at about $800.00 cost for great gains vs $275.00 for nada.
Thats usually not the case though. Ofcourse a FAST is always a better choice but Cory does gret work on the LS2 and LS3 intakes.
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Old Dec 5, 2008 | 10:23 AM
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Originally Posted by Slvr08Z51
This is not true.... It depends on the dealer and your service writer... My dealer is mod friendly to me.. LT's, tune and TC in my Trailblazer SS when it threw a rod... New motor under warranty. No questions asked
I bet you had your warranty work done before Coporate bulleting 08-06-04-033 came out.

http://forums.corvetteforum.com/show....php?t=2041733

Hope you don't need a new motor again!
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Old Dec 5, 2008 | 12:01 PM
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Yeah, i dont hvae a tune yet. Dyno tune planned when everyone i want on it is complete. And the person that i bought it from is one of my best friends fathers, so the stuff im doing (just little things) he will let slide.
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Old Dec 5, 2008 | 05:24 PM
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Originally Posted by JayplaySS2
Thats usually not the case though. Ofcourse a FAST is always a better choice but Cory does gret work on the LS2 and LS3 intakes.
I didnt say Cory doesnt do great work, which he does, just that porting the stock intake does not do much for performance. Propping open your shroud ("free air mod") would give you better performance.
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Old Dec 6, 2008 | 11:56 AM
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Originally Posted by siffert
I know a guy (Glennhl) who only got +5 rw hp on the dyno with a Cory ported stock intake including tuning for it. He did not pick up anything in the 1/4 mile either. Getting a FAST intake with a real gain of +30 rwhp and .30 gained in the 1/4 mile is a much better option albeit at about $800.00 cost for great gains vs $275.00 for nada.
There is no FAST intake for the LS3 yet
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Old Dec 6, 2008 | 01:08 PM
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Originally Posted by siffert
I didnt say Cory doesnt do great work, which he does, just that porting the stock intake does not do much for performance. Propping open your shroud ("free air mod") would give you better performance.

Or both
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Old Dec 6, 2008 | 01:21 PM
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Originally Posted by Slvr08Z51
This is not true.... It depends on the dealer and your service writer... My dealer is mod friendly to me.. LT's, tune and TC in my Trailblazer SS when it threw a rod... New motor under warranty. No questions asked
It isn't up to the dealership, especially in the case of a catastrophic failure such as an engine going south. GM will send the regional rep out to inspect it. And if it was a major failure the dealer bulletine released last year instructs them to check for non GM engine calibrations. If the dealer don't follow protocal, they may get stuck with the bill, and NO DEALER will do that for you unless they have a very good reason to, especially in this economy.

Originally Posted by 8850
I bet you had your warranty work done before Coporate bulleting 08-06-04-033 came out.

http://forums.corvetteforum.com/show....php?t=2041733

Hope you don't need a new motor again!
You got that right! I now know of two instances where powertrain warranty was denied because of Non GM Engine calibrations. One was a catastrophic engine failure, another was someone that had a rear axle failure, he had his powertrain warranty cancelled because the the non GM cal.

Last edited by tjwong; Dec 6, 2008 at 01:23 PM.
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Old Dec 6, 2008 | 01:51 PM
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Originally Posted by dci67
There is no FAST intake for the LS3 yet
This is true, my bad. Still, I would not get a stock ported one while waiting for a LS3 Fast.
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Old Dec 9, 2008 | 08:09 PM
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If i was to get a Diablo tuner and put a tune in, if i put it to the stock tune (for maintanance, warranty work, etc) can the dealer know i had the aftermarket tune on it?
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Old Dec 9, 2008 | 08:13 PM
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Originally Posted by JayplaySS2
Gotcha, I would still install the UD but it may be $$ if you plan on swapping it when visiting the dealer for service. You may want to skip it all together
The UD is very very stock looking and i would not be worried about leaving that on there for basic work as i do not think they would realize what it is. If for some reason i needed the entire engine replaced under warranty, i would be swapping out the headers, UD, thermostat... pretty much everything aftermarket and swapping in the stock stuff before i went to make the claim.
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