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

2010_camaro · 12-08-2012, 08:36 AM

So whats the difference between the two?

MYDLIFECRISIS · 12-08-2012, 08:37 AM

L99=Automatic 400HP stock
LS3=Manual 426HP stock

V8 version...not sure on the V6, but I'm sure it's a similar increase in HP also.

ckaram · 12-08-2012, 08:39 AM

Go to "Wiki" at the top of the forum and most of your questions will get answered.

RollaMo · 12-08-2012, 08:42 AM

Quote:

Originally Posted by MYDLIFECRISIS

L99=Automatic 400HP stock
LS3=Manual 426HP stock

V8 version...not sure on the V6, but I'm sure it's a similar increase in HP also.

The V6 engine is the same for both auto and manual.
So, horsepower would be the same.

L99 and LS3 are similar (but different) V8 engines as you noted.
That is why the difference in HP, not because of the transmission.

MYDLIFECRISIS · 12-08-2012, 08:46 AM

Quote:

Originally Posted by RollaMo

The V6 engine is the same for both auto and manual.
So, horsepower would be the same.

L99 and LS3 are similar (but different) V8 engines as you noted.
That is why the difference in HP, not because of the transmission.

Yes, thank you. I believe they have a little different internal set-up, making the LS3 produce the higher HP.

MoCamaro20 · 12-08-2012, 11:47 AM

What's the RWHP on ls3 and l99 stock

Synyster · 12-08-2012, 12:29 PM

L99 can be from 320-350, most are around 340. Mine was 346.

LS3 I believe can be from 360-380 with most falling around 370 I think.

fz4k98 · 12-08-2012, 12:54 PM

Auto and manual; Auto is for consistency and easier to drive in traffic. Manual is for better control and tinkering when bored.

VR Baron · 12-08-2012, 01:14 PM

L99 has a different cam,valvetrain and heads I believe for the 4 cyl mode for mpg., also a large resonator in the exhuast to help the sound. The cam has lower lift, makes better low end torque where the LS3 cam makes more mid to top end hp.

12-08-2012, 08:36 AM	#1
2010_camaro Drives: 2014 Camaro SS Join Date: May 2011 Location: Florence, KY Posts: 2,238 View My Garage	L99 vs LS3 So whats the difference between the two? __________________ MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs. https://www.instagram.com/whoopa_ss/

12-08-2012, 08:37 AM	#2
MYDLIFECRISIS Drives: '12SS/2SS/45TH-'06 2500HD/Silverado Join Date: Jul 2012 Location: Fairfax, VA Posts: 2,105 View My Garage	L99=Automatic 400HP stock LS3=Manual 426HP stock V8 version...not sure on the V6, but I'm sure it's a similar increase in HP also. __________________ 2012 Camaro SS 2SS 45TH Anniversary Edition

12-08-2012, 08:39 AM	#3
ckaram Drives: 2011 2SS RS, 1968 ragtop Join Date: Apr 2009 Location: Indiana Posts: 1,850	Go to "Wiki" at the top of the forum and most of your questions will get answered. __________________ 1968 Camaro Convertible LS1, T56

12-08-2012, 11:47 AM	#6
MoCamaro20 Drives: 2010 Camaro SS RS L99 Join Date: Jan 2012 Location: West chester OH Posts: 424	What's the RWHP on ls3 and l99 stock

12-08-2012, 12:29 PM	#7
Synyster Drives: 2006 F150 Lariat Join Date: May 2010 Location: Florida Posts: 1,665	L99 can be from 320-350, most are around 340. Mine was 346. LS3 I believe can be from 360-380 with most falling around 370 I think.

12-08-2012, 12:54 PM	#8
fz4k98 Drives: 2013 1ss Join Date: Jul 2012 Location: WI. Posts: 569	Auto and manual; Auto is for consistency and easier to drive in traffic. Manual is for better control and tinkering when bored.

12-08-2012, 01:14 PM	#9
VR Baron SoCal Camaro5 Race Team Drives: 2021 Shadow Grey Camaro 2SS 1LE Join Date: Mar 2010 Location: SO CAL Posts: 14,367	L99 has a different cam,valvetrain and heads I believe for the 4 cyl mode for mpg., also a large resonator in the exhuast to help the sound. The cam has lower lift, makes better low end torque where the LS3 cam makes more mid to top end hp.