Dyno #'s for a stock LS3 right here.

big swede · 07-13-2007, 08:46 PM

This is a local car that is just going through the initial stages. The LS3 is looking even better than I was expecting. Looks like we are going to see some wicked Camaro's in the not-too-distant future.

Bone stock LS3 M6 in a 08' C6 laid down 387rwhp and 377rwtq.

LG long tube headers, No cats, and a K&N intake were added. It then laid down 423rwhp/426rwtq This is untuned.

They then added a G7X-4 cam, and got 488rwhp. Without a Tune.
Results with a tune should be coming today.

guitarlix · 07-13-2007, 10:55 PM

What a beast!

big swede · 07-13-2007, 11:12 PM

Bone stock it is putting down more power than the 03'-04' Cobra's that have the super heavy D.O.H.C. + supercharger + intercooler + all the plumming. I like the Cobra drivetrain but this new LS3 is shaping up to be a wicked motor.

E. Haskell · 07-13-2007, 11:21 PM

387 rwhp @ ~3180lbs.....it's pretty much perfect bone stock.

488rwhp UNTUNED with just a cam and bolt ons is INSANE.

With a tune, that easily 500rwhp. Imagine what it'll do with ported or aftermarket heads.

RWD60 · 07-14-2007, 12:13 AM

not bad... not bad at all.

now, if GM would give me one (along with a Camaro for it to go in) i promise to do my best to get it over 600hp

ctaylorzl1 · 07-14-2007, 01:07 AM

This news makes me want a Camaro more & more! 387rwhp is simply amazing, isnt it susposed to be rated at 435hp at the flywheel?

Xenon · 07-14-2007, 02:50 AM

Dosent it already have L92 heads?
Can it get 600HP N/A? Its getting at least 500 with cams, intake, headers and a tune.

And wanna show numbers with the cats on?

forsbach427 · 07-14-2007, 04:46 AM

where is the proof, i would like to believe it but as far as i know it is all bull ****.

forsbach427 · 07-14-2007, 04:49 AM

Quote:

Originally Posted by big swede

Bone stock it is putting down more power than the 03'-04' Cobra's that have the super heavy D.O.H.C. + supercharger + intercooler + all the plumming. I like the Cobra drivetrain but this new LS3 is shaping up to be a wicked motor.

well this is five years later supercharger or not 4.6 vs a 6.2 come on

E. Haskell · 07-14-2007, 08:12 AM

Quote:

Originally Posted by forsbach427

where is the proof, i would like to believe it but as far as i know it is all bull ****.

Go to Corvette forums.

I believe 600hp will be possible with heads....probably not 600rwhp.

**BigAls87Z28** · 07-14-2007, 09:19 AM

The L92 heads are probably the best OE versions out there. Not much you can do to improve the flow, they flow a boat load.
Remember, that the original LS7 was supposed to be a hi-po 6.2 V8 making 500.

Those numbers are about right if you figure 12% drivetrain loss. There is a lot of potential in the LS3, I belive its undercammed and there is a LOT of room for power. This is a perfect engine for Camaro.
A near 40hp gain with headers? Shesh! Another 60hp gain with a cam...man.
Cant wait for to see a tune to get it done right.

big swede · 07-14-2007, 10:04 AM

Quote:

Originally Posted by forsbach427

well this is five years later supercharger or not 4.6 vs a 6.2 come on

I wasn't saying anything negative about the Cobra motor because I really like it. The Shelby has 5.4 which is the same model year and also has a supercharger, intercooler and all plumbing so it's not just the 5 year older motor that now seems underpowered. What I was getting at is this motor puts out wicked hp and is super light in comparison which is exactly what you want in a car like this. I'm not an OHC hater and if you look back I was probably the first person on this site touting how good the 3.6 is and that GM needs to get it into a lot more cars if they're to be taken seriously. I'm just psyched about how good this LS3 is turning out to be.

Quote:

Originally Posted by forsbach427

where is the proof, i would like to believe it but as far as i know it is all bull ****.

bwnunnally · 07-14-2007, 10:21 AM

Thanks for posting the dyno numbers. The LS3 sounds like it will be a very strong engine.

big swede · 07-14-2007, 10:30 AM

Quote:

Originally Posted by ctaylorzl1

This news makes me want a Camaro more & more! 387rwhp is simply amazing, isnt it susposed to be rated at 435hp at the flywheel?

Gm rates it at 430hp, or 436hp with the optional Z06 style exhaust.
Usually it's approx. -15% for manuals and -20% for automatics so depending on how you want to do it.

387x15%= 445hp at the crank

ctaylorzl1 · 07-14-2007, 11:25 AM

^^^ Thats just plain AWESOME! I cannot wait for the Camaro, just think how the LS3 would sound with some SLP Loudmouth!!! I am already modding a car I dont have, much less, being produced

07-13-2007, 08:46 PM	#1 (permalink)
big swede 6.0 Liter LS2 V8 Join Date: Sep 2003 Location: Midwest Drives: 07' Monte Carlo SS Posts: 4,124	Dyno #'s for a stock LS3 right here. This is a local car that is just going through the initial stages. The LS3 is looking even better than I was expecting. Looks like we are going to see some wicked Camaro's in the not-too-distant future. Bone stock LS3 M6 in a 08' C6 laid down 387rwhp and 377rwtq. LG long tube headers, No cats, and a K&N intake were added. It then laid down 423rwhp/426rwtq This is untuned. They then added a G7X-4 cam, and got 488rwhp. Without a Tune. Results with a tune should be coming today. __________________ 07' SS Monte

07-13-2007, 10:55 PM	#2 (permalink)
guitarlix 7.0 Liter LS7 V8 Join Date: Jun 2006 Posts: 6,153	Re: Dyno #'s for a stock LS3 right here. What a beast!

07-13-2007, 11:12 PM	#3 (permalink)
big swede 6.0 Liter LS2 V8 Join Date: Sep 2003 Location: Midwest Drives: 07' Monte Carlo SS Posts: 4,124	Re: Dyno #'s for a stock LS3 right here. Bone stock it is putting down more power than the 03'-04' Cobra's that have the super heavy D.O.H.C. + supercharger + intercooler + all the plumming. I like the Cobra drivetrain but this new LS3 is shaping up to be a wicked motor. __________________ 07' SS Monte

07-13-2007, 11:21 PM	#4 (permalink)
E. Haskell 6.0 Liter LS2 V8 Join Date: Jun 2006 Posts: 4,092	Re: Dyno #'s for a stock LS3 right here. 387 rwhp @ ~3180lbs.....it's pretty much perfect bone stock. 488rwhp UNTUNED with just a cam and bolt ons is INSANE. With a tune, that easily 500rwhp. Imagine what it'll do with ported or aftermarket heads. __________________

07-14-2007, 12:13 AM	#5 (permalink)
RWD60 6.0 Liter Vortec V8 Join Date: Jul 2004 Location: Clemson SC or Irmo SC Drives: 2 legs and feet... sometimes the bus... Posts: 1,682	Re: Dyno #'s for a stock LS3 right here. not bad... not bad at all. now, if GM would give me one (along with a Camaro for it to go in) i promise to do my best to get it over 600hp __________________ Push, dont pull.... cars are only better than carriages if the horses are in the rear!

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07-14-2007, 01:07 AM	#6 (permalink)
ctaylorzl1 5.3 Liter LS4 V8 Join Date: Nov 2005 Location: Indiana Drives: 1996 Dodge 3500 CTD 4x4 1992 Camaro RS 305 Posts: 3,303	Re: Dyno #'s for a stock LS3 right here. This news makes me want a Camaro more & more! 387rwhp is simply amazing, isnt it susposed to be rated at 435hp at the flywheel? __________________

07-14-2007, 02:50 AM	#7 (permalink)
Xenon 6.0 Liter LS2 V8 Join Date: Mar 2006 Posts: 4,855	Re: Dyno #'s for a stock LS3 right here. Dosent it already have L92 heads? Can it get 600HP N/A? Its getting at least 500 with cams, intake, headers and a tune. And wanna show numbers with the cats on? __________________

07-14-2007, 04:46 AM	#8 (permalink)
forsbach427 3.8 Liter V6 Join Date: Jun 2005 Location: Columbus,OH Drives: 1989 Acura Integra 5speed Posts: 352	Re: Dyno #'s for a stock LS3 right here. where is the proof, i would like to believe it but as far as i know it is all bull ****.

07-14-2007, 09:19 AM	#11 (permalink)
BigAls87Z28 GMI Mod/Camaro Fanatic Join Date: Apr 2003 Posts: 9,541	Re: Dyno #'s for a stock LS3 right here. The L92 heads are probably the best OE versions out there. Not much you can do to improve the flow, they flow a boat load. Remember, that the original LS7 was supposed to be a hi-po 6.2 V8 making 500. Those numbers are about right if you figure 12% drivetrain loss. There is a lot of potential in the LS3, I belive its undercammed and there is a LOT of room for power. This is a perfect engine for Camaro. A near 40hp gain with headers? Shesh! Another 60hp gain with a cam...man. Cant wait for to see a tune to get it done right. __________________ Any Inside Info? Questions or Coments? Ideas? Email me at BigAl@GMInsidenews.com 1993 Caprice 9C1 1987 Camaro Z28 1972 Camaro RS Last edited by BigAls87Z28 : 07-14-2007 at 09:22 AM.

07-14-2007, 10:21 AM	#13 (permalink)
bwnunnally 2.5L Iron Duke Join Date: Feb 2003 Drives: 2005 CTS 3.6L Posts: 19	Re: Dyno #'s for a stock LS3 right here. Thanks for posting the dyno numbers. The LS3 sounds like it will be a very strong engine. __________________ bruce 2005 Cadillac CTS 3.6L w/Corsa cat-back/Volant CAI http://www.caddyinfo.com Last edited by bwnunnally : 07-14-2007 at 11:05 AM.

07-14-2007, 11:25 AM	#15 (permalink)
ctaylorzl1 5.3 Liter LS4 V8 Join Date: Nov 2005 Location: Indiana Drives: 1996 Dodge 3500 CTD 4x4 1992 Camaro RS 305 Posts: 3,303	Re: Dyno #'s for a stock LS3 right here. ^^^ Thats just plain AWESOME! I cannot wait for the Camaro, just think how the LS3 would sound with some SLP Loudmouth!!! I am already modding a car I dont have, much less, being produced __________________

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