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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 05-09-2009, 09:57 AM   #1
dermo1989
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Question GM performance headers and exhaust: what kind of performance increase?

Has anyone seen any performance specs. when adding these 2 items?:bangdesk:
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Old 05-09-2009, 11:14 AM   #2
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Nope well find out within 2 months probably when the parts are released
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Old 05-09-2009, 01:51 PM   #3
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honestly wouldnt waste time or money on there shorty headers. any long tubes from kooks, arh, etc will be way better and around the same price.
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Old 05-09-2009, 01:52 PM   #4
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Pacesetters FTW!!!
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Old 05-09-2009, 04:28 PM   #5
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Some of us live in states where ONLY CARB certified parts are allowed...

I did the whole long tube thing on my 1998, but have to change them back to stock manifolds every two year, which sucks (If you have ever changed headers on a 4th Gen in your garage, you will understand)...

The shorty's are CARB certified, but so is the new MagnaCharger 2300 (the only other thing needed is a set of forged pistons)!
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Old 05-10-2009, 07:31 PM   #6
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(the only other thing needed is a set of forged pistons)!
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Old 05-11-2009, 05:24 PM   #7
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Some of us live in states where ONLY CARB certified parts are allowed...

I did the whole long tube thing on my 1998, but have to change them back to stock manifolds every two year, which sucks (If you have ever changed headers on a 4th Gen in your garage, you will understand)...

The shorty's are CARB certified, but so is the new MagnaCharger 2300 (the only other thing needed is a set of forged pistons)!
I've paid $500 in fines for LTs here. As much as I hate to have done it, I just pulled my QTPs because I'm tired of worrying about another ticket. I got some nice barely used Edelbrock shorties, added a Random Technologies 2.5-inch Y-pipe, and called it done. I don't have to swap them out anymore and won't have a problem smogging. Does it sound or run like it had done? No. I'm probably leaving a good 20 RWHP on the table and the sound it so boring now, but I'm glad there are some factory engineered shorties out there for us who don't have a choice.

I'm guessing the shorties probably won't be worth much more than 10 RWHP - maybe 15 with a tune. The catback will probably be close to 5 to 10 RWHP. Bottom line, for both, and a tune, maybe about 25 to 30 RWHP. I think the CAI would definately push it that high.
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Old 05-11-2009, 06:14 PM   #8
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Pacesetters FTW!!!
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Old 05-11-2009, 06:15 PM   #9
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LOL ^ They need to just call these things CA headers
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Old 05-12-2009, 11:37 AM   #10
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GM Peformance Short Tube Headers and Exhaust

Is there an actual performance gain with the short tube hearders vs. the stock headers that the SS / the 6 speed has? As well as the Cat Back Exhaust?

Im trying to keep the car strickly all GM parts but i cant see spending the money on this stuff if there isnt a decent gain in power. I should be getting delivery on my car by the end of the month. Any knowledgewould be apreciated!
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Old 05-12-2009, 11:44 AM   #11
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shorties suck, put them on my GTO... lets just say as soon as I had the cash I went Long Tubes ASAP!!!
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Old 05-12-2009, 11:04 PM   #12
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shorties suck, put them on my GTO... lets just say as soon as I had the cash I went Long Tubes ASAP!!!
What was the difference between the two? Do you have dyno numbers?
Thanks.
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Old 05-13-2009, 09:49 PM   #13
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297/316 stock

309/329 shorties

337/351 LT's
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Old 05-14-2009, 03:43 PM   #14
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Im with shocker on this but to get to the ? at hand I'd say 30rwhp give or take 5
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Old 05-14-2009, 04:37 PM   #15
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Quote:
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297/316 stock

309/329 shorties

337/351 LT's
but with the LT's you did the exhaust piping too, right?

and with the shorties, did you do the rest of the exhaust as well?

and were these both including a tune?
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Old 05-14-2009, 07:59 PM   #16
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297/316 stock

309/329 shorties

337/351 LT's
WoW, That is a big difference.
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Old 05-14-2009, 08:45 PM   #17
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but with the LT's you did the exhaust piping too, right?

and with the shorties, did you do the rest of the exhaust as well?

and were these both including a tune?

both were tuned

both had a SLP LM installed.
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Old 05-14-2009, 08:48 PM   #18
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Warranty ??

Would this void the warranty if something would go wrong with the power train, or engine???
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Old 05-14-2009, 08:53 PM   #19
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no
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Old 05-14-2009, 08:55 PM   #20
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good

thats good news, I might consider it then. thanks
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Old 05-15-2009, 04:03 AM   #21
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both were tuned

both had a SLP LM installed.
what about the mid pipes?
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Old 05-15-2009, 07:33 AM   #22
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shorties has stock mids

LT's catless mids
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Old 05-15-2009, 07:58 AM   #23
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Uncle Robin is working up the data on his own Camaro in the next couple of weeks. He has our prototype GMPP CAI, shorties, and cat-back exhaust.

These are the only parts of their kind that will keep your factory warranty intact.

For more information on the GM Performance Parts line of crate engines and Camaro parts, check out our dedicated Camaro page here:

http://www.gmperformanceparts.com/Ra...010-camaro.jsp

There are many more Camaro parts on the way ....

Jamie
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Old 05-15-2009, 08:03 AM   #24
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thanks for the updates Dr. GMPP. I look forward to the results, and possibly a sound clip of them all installed.
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Old 08-23-2009, 10:21 AM   #25
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How bad do you think a cam is gonna mess with the warranty
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