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

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Old 03-30-2010, 09:15 PM   #1
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What should I expect to dyno??

LS3
Borla "S" type catback exh.
Royal Purple oil

the rest is all stock, even the tune and intake..

what should I expect to dyno? car has 9,300 miles on it.
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Old 03-30-2010, 09:22 PM   #2
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Same as a stock LS3. Right around 375rwhp or so, depending on the dyno. Catback's don't add anything to the LS3's since the stock exhaust is already mandrel bent with a straight through muffler design. On these cars you get exhaust mainly for the exhaust note. You do save some weight with the aftermarket exhausts, but your hp won't go up much, if at all.
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Old 03-30-2010, 09:34 PM   #3
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Same as a stock LS3. Right around 375rwhp or so, depending on the dyno. Catback's don't add anything to the LS3's since the stock exhaust is already mandrel bent with a straight through muffler design. On these cars you get exhaust mainly for the exhaust note. You do save some weight with the aftermarket exhausts, but your hp won't go up much, if at all.
Axle-backs don't add anything. I think cat-back's with x-pipes will add a few ponies.
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Old 03-30-2010, 09:37 PM   #4
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so is there an average range of what a stock LS3 dyno's?
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Old 03-30-2010, 09:39 PM   #5
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365-375 RWHP
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Old 03-30-2010, 10:05 PM   #6
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Old 03-30-2010, 11:12 PM   #7
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Nice numbers.
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Old 03-31-2010, 05:57 AM   #8
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Here is a link to the video, 3 passes back to back for a base line at Ragin Racing.

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Old 03-31-2010, 06:07 AM   #9
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Nice numbers my friend
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Old 03-31-2010, 07:10 AM   #10
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Nice numbers!
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Old 03-31-2010, 07:34 AM   #11
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That might be the highest stock dyno I've seen. And it hasn't been tuned?? Mine was 354HP stock.
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Old 03-31-2010, 02:12 PM   #12
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Nice Numbers,

Ragin has done all of my work so far and I'm very pleased
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Old 03-31-2010, 02:19 PM   #13
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Nice Numbers,

Ragin has done all of my work so far and I'm very pleased
Has Shawn put yours on the dyno and what mods have you done so far for performance?
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Old 03-31-2010, 02:36 PM   #14
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Has Shawn put yours on the dyno and what mods have you done so far for performance?

Yea, bone stock was 360 rwhp and 364 tq. in late November with 1050 miles on it. Went back 2 weeks ago with about 1400 miles on it. I got the Kook's 1-3/4" LT w/high flow cats, 3" Kook's catback to the tips, C.A.I. cold air intake and Shawn did a custom street tune. After the mods I'm at 410 rwhp & 408 tq. 50 hp gain and 44 tq. not too shabby for bolt ons. Debating on what's next, cam or S/C.
Have you done any mods yet?
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