LS3 vs. L99 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

LS3 · 01-20-2009, 06:59 PM

Ive already ordered my car with the LS3 Manual, obviously. But what I wanna know is what everyone has been reading and figuring would be better about the L99 before the car is made I really wanna be sure I am getting the better of the options.

What I know:
L99 LS3
Auto Manual
400 Hp 422 Hp

Inspector 17 · 01-20-2009, 07:03 PM

L99 will have the Active Fuel Management. Along with that, it will have different tuning (I believe a different cam also) and a different exhaust note.

EDIT: BTW, the LS3 is rated at 426HP per the most recent update.

headpunter · 01-20-2009, 07:34 PM

no real significant difference. if you want an auto get the l99, if you want the manual get an ls3. They are 99% the same, + a different transmission. so it all comes down to the personal preference.

*Mr. Wyndham* · 01-20-2009, 08:02 PM

Performance should be nearly identical.
And the L99 will give you one more mpg hwy.
But it's also a $995 option.

*radz28* · 01-21-2009, 09:30 AM

426 horse' for the LS3 now, but no biggie.

I think the LS3 is easier to modify because it's less complex. No AFM or VVT. No complaints about the exhaust sound going strange when in 4 cylinder mode or whatever. This is just what I've read.

I think the small difference in performance will be less than many people think. Shoot, that argument would change completely if a person would add a big stall to an auto'.

*The_Blur* · 01-21-2009, 09:41 AM

They are so equal that your best bet is to go with your gut. There are several threads discussing these engines already on the forums, so you may want to do a search to get the most answers.

Croathlete · 01-21-2009, 09:59 AM

Just hoping that the L99 doesn't impede my hopes of adding either a supercharger or a turbo sometime in the future...

Rodrunner · 01-21-2009, 10:52 AM

Appears the difference is even less than it seemed a short while ago with the latest torque figures being 410(bumped from 395) - L99 and 420 - LS3.

And you get remote start with the 2LT and 2SS with auto trans - 1LT also if the C&C Package (SRJ) is ordered.

Lord Grey · 01-21-2009, 11:39 AM

Quote:

Originally Posted by Croathlete

Just hoping that the L99 doesn't impede my hopes of adding either a supercharger or a turbo sometime in the future...

How would Active Fuel Management play with a supercharger or a turbo? Could there be a problem with that combination?

Just curious. I'm going with an LS3 on mine, no questions.

*GTAHVIT* · 01-21-2009, 01:30 PM

Searched for "supercharged afm'

Quote:

Originally Posted by JusticePete

Yes you can use F/I with the AFM system. Mine has been working flawlessly for months. Including dyno testing, auto-crosses, road courses, drag strips, highway and city driving my L76 G8 is delivering 19.1 MPG and now is at 480 RWHP.

See this post in this thread:

Can you S/C an active fuel mgt engine?

Another helpful thread.

LS3 vs L99 (old)

Rodrunner · 01-21-2009, 05:41 PM

Ah yes, the forum's search feature. Quite helpful way to find many answers quickly.

Lord Grey · 01-21-2009, 07:46 PM

Whoa. Search?!

Thanks for the links, and the reminder to check before posting inane questions.

*GTAHVIT* · 01-21-2009, 10:39 PM

No prob Grey!

Enjoy!

01-20-2009, 06:59 PM	#1
LS3 Drives: 2010 Cyber Camaro Join Date: Jan 2009 Location: Orange County,CA Posts: 11	LS3 vs. L99 Ive already ordered my car with the LS3 Manual, obviously. But what I wanna know is what everyone has been reading and figuring would be better about the L99 before the car is made I really wanna be sure I am getting the better of the options. What I know: L99 LS3 Auto Manual 400 Hp 422 Hp

01-20-2009, 07:34 PM	#3
headpunter Not That sad..considering Drives: Man Join Date: Aug 2007 Location: the part of washington the capital forgot about. Posts: 3,747 View My Garage	no real significant difference. if you want an auto get the l99, if you want the manual get an ls3. They are 99% the same, + a different transmission. so it all comes down to the personal preference. __________________ Stop Whinging

01-20-2009, 08:02 PM	#4
Mr. Wyndham I used to be Dragoneye... Drives: 2018 ZL1 1LE Join Date: Jan 2007 Location: Buffalo, NY Posts: 31,876 View My Garage	Performance should be nearly identical. And the L99 will give you one more mpg hwy. But it's also a $995 option. __________________ *"Keep the faith."* - Fbodfather

01-21-2009, 09:30 AM	#5
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,192 View My Garage	426 horse' for the LS3 now, but no biggie. I think the LS3 is easier to modify because it's less complex. No AFM or VVT. No complaints about the exhaust sound going strange when in 4 cylinder mode or whatever. This is just what I've read. I think the small difference in performance will be less than many people think. Shoot, that argument would change completely if a person would add a big stall to an auto'. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

01-21-2009, 09:41 AM	#6
The_Blur Moderator Drives: 2018 Harley-Davidson Street Bob Join Date: Nov 2007 Location: San Diego Posts: 14,769	They are so equal that your best bet is to go with your gut. There are several threads discussing these engines already on the forums, so you may want to do a search to get the most answers. __________________ RDP Motorsport//GEN5DIY//Cultrag Performance//JPSS//Rodgets Chevrolet// Operation Demon//Buy at Invoice//RACECARWEAR RESPECT ALL CARS. LOVE YOUR OWN. warn 145:159 ban

01-20-2009, 07:03 PM	#2
Inspector 17 I love crepes Drives: 2017 ZL1 NGM A10 Join Date: Oct 2008 Location: Maryland Posts: 4,955 View My Garage	L99 will have the Active Fuel Management. Along with that, it will have different tuning (I believe a different cam also) and a different exhaust note. EDIT: BTW, the LS3 is rated at 426HP per the most recent update.

01-21-2009, 09:59 AM	#7
Croathlete Danny Drives: 2010 Camaro 2SS/RS Join Date: Nov 2007 Location: NYC Posts: 1,656	Just hoping that the L99 doesn't impede my hopes of adding either a supercharger or a turbo sometime in the future... __________________ 2SS/RS CGM with black rally stripes DON_RAFA describing my Noweeds cutouts - "Very Strong. When I couldn't see you I still heard you. Sounds like your car is pissed at the world."

01-21-2009, 10:52 AM	#8
Rodrunner Senior Member Drives: 2010 SS/RS, '06 350Z Join Date: Oct 2008 Location: So. Maryland Posts: 2,333	Appears the difference is even less than it seemed a short while ago with the latest torque figures being 410(bumped from 395) - L99 and 420 - LS3. And you get remote start with the 2LT and 2SS with auto trans - 1LT also if the C&C Package (SRJ) is ordered. __________________ 2SS/RS - Black/Black - CGM Rally Stripes - Auto - VIN 10171

01-21-2009, 05:41 PM	#11
Rodrunner Senior Member Drives: 2010 SS/RS, '06 350Z Join Date: Oct 2008 Location: So. Maryland Posts: 2,333	Ah yes, the forum's search feature. Quite helpful way to find many answers quickly. __________________ 2SS/RS - Black/Black - CGM Rally Stripes - Auto - VIN 10171

01-21-2009, 07:46 PM	#12
Lord Grey Drives: 2010 Camaro SS/RS Join Date: Nov 2008 Location: Cedar Park, TX Posts: 168 View My Garage	Whoa. Search?! Thanks for the links, and the reminder to check before posting inane questions.

01-21-2009, 10:39 PM	#13
GTAHVIT Blessed Drives: 2013 Sonic RS MT Join Date: Dec 2007 Location: Saint Augustine FL Posts: 28,444 View My Garage	No prob Grey! Enjoy! __________________ Click image to see build thread. PQ - "the love of cars. It's a boys first step toward manhood and a mans last hold on boyhood." Fbodfather - "We do not want to use the Z28 moniker on a car that does not deserve this hallowed name." The_Blur - "Let's not confuse competitors with equals."

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