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

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Old 01-13-2009, 12:21 PM   #1
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Horsepower gains.

Hi. What I would like to have is a breakdown, so I can have an idea of what to expect from this engine.
1st. Estimate on hp gain possibilities with out forced induction or internals
2cd. Estimate on hp gain possibilities with forced induction and no internals.
3rd. Estimate on hp gain possibilities with internals done and basic bolt-ons, no forced induction.
4th. Estimated on hp gain possibilities with internals and forced induction.

I know this is alot, any help though would be much appreciated. I love the Camaro, but I am new to the whole 8 cylinder thing. I plan on modding and want to see how the different options might play out. Thanks!

Dave

Last edited by Silver Streak; 01-13-2009 at 05:18 PM.
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Old 01-13-2009, 12:35 PM   #2
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Quote:
Originally Posted by Silver Streak View Post
1st. Estimate on hp gain possibilities with out forced induction or internals
2cd. Estimate on hp gain possibilities with forced induction and no internals.
3rd. Estimate on hp gain possibilities with internals done and basic bolt-ons, no forced induction.
4th. Estimated on hp gain possibilities with internals and forced induction.
Others can answer better due to hands-on experience...but here goes.

1st, I assume you mean bolt-on parts for this...probably 480-500.

2nd, Most stock engines can accept 7-8lbs of boost safely. At a stock 400hp, this translates into roughly 550hp-600hp.

3rd, 500-600, I'd imagine. But you're gonna shell out a lot of dough the higher your hp goal is going this route.

4th...virtually limitless. But the stock LS3 engine block is rated up to 1000hp, if my memory is correct. Any more than that and your engine is gonna explode.
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Old 01-13-2009, 12:50 PM   #3
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Quote:
Originally Posted by Dragoneye View Post
Others can answer better due to hands-on experience...but here goes.

1st, I assume you mean bolt-on parts for this...probably 480-500.

2nd, Most stock engines can accept 7-8lbs of boost safely. At a stock 400hp, this translates into roughly 550hp-600hp.

3rd, 500-600, I'd imagine. But you're gonna shell out a lot of dough the higher your hp goal is going this route.

4th...virtually limitless. But the stock LS3 engine block is rated up to 1000hp, if my memory is correct. Any more than that and your engine is gonna explode.
wow, that is pretty impressive for basic bolt-ons. I like that. Thought built and FI would top a lil better than that, maybe it would, you would just be taking big chances at that point. I know the ecotec 2LN can make 1200 hp, I know we are beyond the point of streetable though. I am lookin at 600 to 650, and I am liking what you have said. Can't wait. I am going to have long breakin period but then it is getting modded. If I have learned anything you should know what you want and how to get there before you even start. Thanks for the information Dragoneye.

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Old 01-13-2009, 12:58 PM   #4
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Check out what Lingenfelter folks are doing with the Corvette LS3, might give you some ideas.
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Old 01-13-2009, 01:06 PM   #5
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Quote:
Originally Posted by Silver Streak View Post
Hi. What I would like to have is a breakdown, so I can have an idea of what to expect from this engine.
1st. Estimate on hp gain possibilities with out forced induction or internals
2cd. Estimate on hp gain possibilities with forced induction and no internals.
3rd. Estimate on hp gain possibilities with internals done and basic bolt-ons, no forced induction.
4th. Estimated on hp gain possibilities with internals and forced induction.

I know this is alot, any help though would be much appreciated. I love the Camaro, but I am new to the whole 8 cylinder thing. I plan on modding and want to see how the different options might play out. Thanks!

Dave
I'll take a stab at this:

1st. Estimate on hp gain possibilities with out forced induction or internals

I'd say just bolt ons will get you 460 - 470 (engine HP) range

2nd. Estimate on hp gain possibilities with forced induction and no internals.
Roots style at about 8psi I would say will get you to the 550 engine HP range


3rd. Estimate on hp gain possibilities with internals done and basic bolt-ons, no forced induction.

I'd say you may get to around 520 - 550 engine HP range ..


4th. Estimated on hp gain possibilities with internals and forced induction.

Depends on how much you want to spend ... no limits for streetable HP here.

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Old 01-13-2009, 02:46 PM   #6
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Quote:
Originally Posted by Silver Streak View Post
Hi. What I would like to have is a breakdown, so I can have an idea of what to expect from this engine.
1st. Estimate on hp gain possibilities with out forced induction or internals

If you mean only bolt-ons, I'd say you'd probably top out close to 500 FWHP. Since we're starting a like 426 horse', I think CAI could be worth up to about 10-15 RWHP, LTs up to 30, catback up to 15, and a tune could fetch another 10-20. I think some of those guesses are a little optimistic but that's why I said up to. Even though a cam is internal, I'm sure you could eek a good 550 with a big thumper in there and bolt-ons. I know of a guy with an '02 SS, and with an MS3, Fast 90/90, balancer, and the rest of the bolt-ons, but down almost 440 RWHP. Stock long block except for the cam and valvetrain. I don't think almost 550 is too out of reach considering the heads and intake.

2cd. Estimate on hp gain possibilities with forced induction and no internals.

I'm going to venture a little more optimistic here - assuming bolt-ons and something like a 2300 SC, I think 600 will be a limit, with an excellent tune. I'm not sure that the motor would last too long at that level considering LSAs and LS9s in this general power range are running a lot of forged components (LS9) but they also have piston oil squirters too, not to mention upgraded head castings and, in the case of the LS9, bigger head bolts. Considering Magnacharger has a something-like 460 RWHP G8 with a catback and like 6-8 pounds of boost, that's close to probably 525 FWHP, so I don't think getting close to 600 is entirely out of the question, considering the more aggressive LS3 cam. Again, I'm not sure how long she'll live though...

3rd. Estimate on hp gain possibilities with internals done and basic bolt-ons, no forced induction.

I bet you could well exceed 600 FWHP here. Shoot - Katech is getting 640-or-something out of their Street Attack 427. Isn't GMPP releasing (or going to) a LSX454 with power in that general range, and that's with a lot of LS7-related components, all NA. I think 650 wouldn't be out of the question, but I don't know if you could live with that monster on the street.

4th. Estimated on hp gain possibilities with internals and forced induction.

I don't see why you couldn't go to 1000 horse. If you resleeve the block you could probably run past that number if you do it right. Wheel to Wheel have some awesome examples. If you run an LSX iron block you could get up to 2500 horse' safely so this one's up to your wallet and what you want to do.

I know this is alot, any help though would be much appreciated. I love the Camaro, but I am new to the whole 8 cylinder thing. I plan on modding and want to see how the different options might play out. Thanks!

Dave
I don't think the physics are going to change from your 4-cylinder. I think it will boil down to what you want out of the car and how big your wallet is. Really, the sky's the limit and I think you'd run out of street drivability before running out of potential for making power with these engines.

JMVHO.
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Old 01-13-2009, 05:20 PM   #7
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Quote:
Originally Posted by radz282003 View Post
I don't think the physics are going to change from your 4-cylinder. I think it will boil down to what you want out of the car and how big your wallet is. Really, the sky's the limit and I think you'd run out of street drivability before running out of potential for making power with these engines.

JMVHO.
Thanks very much for the in depth answer. That helps alot. Thanks!
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Old 01-13-2009, 07:25 PM   #8
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I'm sure there are other threads out there showing FI capabilities, some have already given good estimations of power, I'd like to focus on one specific situation, that is cam only...So this would be CAI, headers/exhaust, tune, and cam...optionally, you could add an underdrive pulley (probably not worth more than 5hp, but does allow quicker reving)...with the LS3 a FAST intake will also be available, along with a FAST throttle body (102 mm, vs FAST 92mm for LS2), According to FAST, early testing on a STOCK LS3 engine with a Big Mouth 102mm Throttle Body produced gains of 14+ horsepower and 11 ft/lbs of torque at the flywheel over the stock intake. I can guess that when people learn how to port this, on a MODIFIED LS3, you'll start seeing 10-15 rwhp gains.
http://www.streetlegaltv.com/forum/f...-ls3-1908.html

So for a cam only car, lets take the G8 for example, similar motor design, a little heavier, but just to show the potential, here is an Aussie vid of a cam only Holden G8 I'll include links to the mods, but other than a little lightening (which probably would only bring it even with the camaro weight), and running DR and skinnies. Check out the MPH...=power

http://www.g8board.com/forums/showthread.php?t=974



Here is a chassis Dyno of a cam with mild heads, LT's and vararam C6...cam is an LG G6X3...This combination had not been tuned to optimize performance.
http://i139.photobucket.com/albums/q...d/LouisLS3.jpg
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Old 01-13-2009, 07:31 PM   #9
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Quote:
Originally Posted by Dragoneye View Post
Others can answer better due to hands-on experience...but here goes.

1st, I assume you mean bolt-on parts for this...probably 480-500.

2nd, Most stock engines can accept 7-8lbs of boost safely. At a stock 400hp, this translates into roughly 550hp-600hp.

3rd, 500-600, I'd imagine. But you're gonna shell out a lot of dough the higher your hp goal is going this route.

4th...virtually limitless. But the stock LS3 engine block is rated up to 1000hp, if my memory is correct. Any more than that and your engine is gonna explode.


• Cheap
• Fast
• Reliable
• Pick 2

Obviously, the cheap and fast route is dangerous. The cheap and reliable route will be mostly cosmetic. The fast and reliable route will go as far as your desires and wallet take you. Spend a lot of time and money on every build component, and you will be educated and highly performance-oriented.
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Old 01-14-2009, 08:55 AM   #10
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Originally Posted by The_Blur View Post


• Cheap
• Fast
• Reliable
• Pick 2
Hey, thats spikes line
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Old 01-14-2009, 09:00 AM   #11
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Silly question from a newby! Please clarify "Bolt ons" is that like cold air intake etc?
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Old 01-14-2009, 09:23 AM   #12
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Bolt-ons are typically most everything you can do to the exterior of the engine itself. Usually, CAI, full exhaust, pulley (ies), etc. It pretty much means everything that doesn't require removing a valve cover. I always thought to include intake manifolds too but I've never really noticed any consistancy either way.
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Old 01-14-2009, 09:29 AM   #13
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Thanks!
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Old 01-14-2009, 09:51 AM   #14
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Quote:
Originally Posted by WAY2FAST View Post
Silly question from a newby! Please clarify "Bolt ons" is that like cold air intake etc?
Thanks for all the answers, this really helps with my planning! Anything that can be added for the performance of the car without getting into the engine would be considered a bolt-on excluding forced induction!
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