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

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Old 02-27-2013, 01:56 PM   #1
gmen09
 
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Question What does it take to get to 426rwhp?

What does it take to get the car to 426 rwhp, have people seen 426 rwhp and 420rwtq from cold air intake, full exhaust (lt headers and hi flow cats), ported tb, and a really good quality tune?
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Old 02-27-2013, 02:41 PM   #2
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Yep, just what you mentioned ...
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Old 02-27-2013, 02:48 PM   #3
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Quote:
Originally Posted by gmen09 View Post
What does it take to get the car to 426 rwhp, have people seen 426 rwhp and 420rwtq from cold air intake, full exhaust (lt headers and hi flow cats), ported tb, and a really good quality tune?
Are you ls3 or l99?

With long tubes, offroad x, underdrive pulley, throttle body, and intake I made 420hp (ls3)
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Old 02-27-2013, 04:03 PM   #4
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Depending on the tune/dyno your be right around there. I have mods you mentioned and managed 434
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Old 02-27-2013, 04:23 PM   #5
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Yep, just what you mentioned ...
now, start buying & buying & buying &.....
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11.90's w/headers, CAI, tune, & some high-test (no bling).



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Old 02-27-2013, 04:36 PM   #6
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that is exactly what I am running with LS3, ARH headers, Solo cat back exhaust and CAI
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Old 02-27-2013, 05:19 PM   #7
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BTW: You should be asking "what does it take to get to 11.90's" ?
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Old 02-27-2013, 05:19 PM   #8
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LTs/intake/tune will get most LS3s in the 410-425 range.
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Old 02-27-2013, 05:24 PM   #9
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Why 426?
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Old 02-27-2013, 05:47 PM   #10
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looks like your on the right path ... air in air out and good tune is the place to start. a pit stop at 420rwhp for a little bit ... you will want more within 6 months ... enjoy the quest for more power
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Old 02-27-2013, 06:56 PM   #11
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426 rwhp because the engine is rated at 426 to the crank, so I thought it would be cool to make around 426 to the wheels, and that is around 500 to the crank right?
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Old 02-27-2013, 07:03 PM   #12
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Quote:
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now, start buying & buying & buying &.....

I wouldnt call getting to 426 buying,buying, and buying.

The cost to get that is chump change
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Old 02-27-2013, 07:41 PM   #13
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Quote:
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426 rwhp because the engine is rated at 426 to the crank, so I thought it would be cool to make around 426 to the wheels, and that is around 500 to the crank right?
i am the first to admit things break ... but you can get way more than 426 out of stock bottom end
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Old 02-27-2013, 07:45 PM   #14
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ditch the ported throttle body and add a cam ... cam MUCH better value
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Old 02-27-2013, 08:34 PM   #15
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By rated at the crank i think the OP means that the stock HP advertised on the LS3 is 426HP.

Not that the bottom end is only rated to 426whp
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Old 02-27-2013, 08:46 PM   #16
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Bolt the rear wheel to the fly wheel.............
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Old 02-27-2013, 08:49 PM   #17
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$
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Old 02-27-2013, 08:55 PM   #18
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$
Haha thats the best answer
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Old 02-27-2013, 08:56 PM   #19
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Quote:
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ditch the ported throttle body and add a cam ... cam MUCH better value
What he said and get several more and an old school lope to boot!
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Old 02-27-2013, 09:09 PM   #20
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warranty

Quote:
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ditch the ported throttle body and add a cam ... cam MUCH better value
wont adding a cam void the powertrain warranty vs a TB will not void any warranty.
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Old 02-27-2013, 09:33 PM   #21
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Think headers will do the trick as far as a warranty goes. I assumed he did not care about warranty. Matter of fact I think the high quality tune will do the trick as well.
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Old 02-27-2013, 09:56 PM   #22
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i am the first to admit things break ... but you can get way more than 426 out of stock bottom end
Oh no no no, I know that these cars can handle major hp, i just meant that the ls3 is a 426 hp engine (rated at 426 at the flywheel) sorry for the confusion.
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Old 02-27-2013, 10:10 PM   #23
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Feel free to give us a call to discuss options. Bolt ons and a cam will get you in the 450+ range.
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Old 02-27-2013, 10:12 PM   #24
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I got 450 rwhp up here at altitude with the stock airbox, an emissions-legal big camshaft, LT headers, no cats, 3" exhaust all the way into a pair of Flowmasters, and a good tune from an expert tuner. A buddy of mine has the exact same setup and same tune, but also a CAI - he got 453 rwhp. Don't waste your money on a CAI for 3rwhp - the stock box will flow plenty of air (more air than stock intake and heads can flow) until you throw on a Maggie.

BLESSINGS!
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Old 02-28-2013, 05:37 AM   #25
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425.6 HP but day to day dyno to dyno your numbers can change.
Its the before and after mods that count.
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