V8 Engine Details - ModernCamaro.com - 5th Generation Camaro Enthusiasts
V8 Engine Discussion 6.2L LS3/L99 V8 | Exhaust | Ignition | Induction | Intakes

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post #1 of 34 Old 07-21-2008, 03:45 PM Thread Starter
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V8 Engine Details

These specs are also found on the production spec sheet found here:
http://www.5thgen.org/forum/showthread.php?t=7001

LS3 / L99 - 6.2L V8

Displacement: 6162cc / 376ci
Bore x Stroke: 4.06" x 3.62" / 103.25mm x 92mm
Block Material: cast aluminum w/ cast-in-place iron bore liners
Cylinder Head Material: Aluminum
Valvetrain: valve-in-head; two valves per cylinder; roller lifters; L99 - Active Fuel Management
Ignition System: high-energy distributorless ignition; solid state direct-fire ignition w/ coil near plug and integrated ignition
Fuel Delivery: returnless, multi-port fuel injection
Compression Ratio: 10.7:1
Horsepower: LS3 - 422 @ 5000rpm, L99 - 400 @ 5000rpm
Torque: LS3 - 408 @ 4500rpm, L99 - 395 @ 4500rpm
Maximum Engine Speed: LS3 - 6600rpm, L99 - 6000rpm
Recommended Fuel: Premium Unleaded
Emissions Controls: evaporative system, close-coupled catalytic converters, positive crankcase ventilation, electronic throttle control
Fuel Economy (estimate): 23MPG Highway - Auto Trans

2001 Camaro Z28 H/C/I LH6 A4 3.42

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post #2 of 34 Old 07-21-2008, 03:47 PM
 
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Anybody catch that the hp ratings are at only 5,000 rpm.

Can you say underrated for insurance purposes?

The LS3 is a good base engine to work from.
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post #3 of 34 Old 07-21-2008, 03:49 PM
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Looks like the main differences between the engines is the obvious AFM on the L99 and the free-er flowing heads on the LS3.

Hmmmmm, since the AFM is accomplished via solenoids controlling collapsible lifters, then I see a LS3 head swap onto a L99 as an easy HP booster.

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post #4 of 34 Old 07-21-2008, 03:51 PM
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Quote:
Originally Posted by Got Me SOM View Post
Anybody catch that the hp ratings are at only 5,000 rpm.

Can you say underrated for insurance purposes?

The LS3 is a good base engine to work from.
There's power beyond that 5K RPM, brudda!

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post #5 of 34 Old 07-21-2008, 03:52 PM
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Quote:
Originally Posted by Got Me SOM View Post
Anybody catch that the hp ratings are at only 5,000 rpm.

Can you say underrated for insurance purposes?

The LS3 is a good base engine to work from.
Yeah, no kidding. It took me awhile to figure that one out. 422hp at 5000rpm but engine red-line is 6600rpm. Something tells me that the actual hp output is somewhere around 450hp, maybe even 475hp.

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post #6 of 34 Old 07-21-2008, 04:01 PM
 
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LOL I knew you guys would catch on. I caught that right away.

You can probably figure out what the hp is at redline, I guarantee ya its more than 422.
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post #7 of 34 Old 07-21-2008, 04:12 PM
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What about Flex-Fuel (E85)? Should they have that in the specs if it is? Does that mean it's not?

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post #8 of 34 Old 07-21-2008, 04:13 PM
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Quote:
Originally Posted by Got Me SOM View Post
LOL I knew you guys would catch on. I caught that right away.

You can probably figure out what the hp is at redline, I guarantee ya its more than 422.
Yep, this is a modern day COPO Camaro

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post #9 of 34 Old 07-25-2008, 07:58 AM
 
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Wink LS-3 dyno

The LS-3 crate engine dyno was 430 hp @ 5900 rpm and 424 lb-ft @ 4600.
That is a lot higher rpm than the specs on the LS-3 in the SS Camaro.

Are they holding back.....
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post #10 of 34 Old 07-27-2008, 10:22 AM
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Yeah, there is no way it peaks at 5K. And if it does that's one small cam or one restrictive intake. Either way good news for us.
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