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

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Old 08-16-2009, 06:40 PM   #1
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L99 Camaro still not as strong as G8 auto

Just from looking at how well the modded G8 GT's are doing in comparison to the l99 Camaro. 520 whp on a Maggie G8 GT auto, the closest l99 is 475whp.

Do the G8's run alot stronger?

It already sux that the L99 dyno's 40-50 whp less then a LS3 which = 75 hp difference at the crank, way more then the advertised 26 hp difference. Now there's a even more 30-40 whp difference between the L99 and G8 GT.

I not trying to bash the L99 but its a hard sell because of the huge difference in power.
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Old 08-16-2009, 06:45 PM   #2
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Quote:
Originally Posted by BigDan View Post
Just from looking at how well the modded G8 GT's are doing in comparison to the l99 Camaro. 520 whp on a Maggie G8 GT auto, the closest l99 is 475whp.

Do the G8's run alot stronger?
Is there a possibility you are confusing the GXP G8 with the standard G8?
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Old 08-16-2009, 07:20 PM   #3
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my fiance has a g8 gt, and I take her every time by 7-8 car lengths... I have a LS3 in mine though.
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Old 08-16-2009, 07:40 PM   #4
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i saw a g8 with some bolt ons and a tune and drag radials and it was only running 13.8's
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Old 08-16-2009, 07:52 PM   #5
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It's not 75 hp diff. You need to also take the 5-8% loss of the auto tranny.
Please know facts first.
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Old 08-16-2009, 08:01 PM   #6
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So a auto SRT8 with -1 gear is faster than a SS L99 ?
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Old 08-16-2009, 08:56 PM   #7
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So a auto SRT8 with -1 gear is faster than a SS L99 ?
Only 6-L99 cars have posted 1/4 mile ET's so far, considering this and the fact this is the hottest time of the year=slowest times, I'd say you'll see MUCH faster times this fall. So far Matt's 13.2 @ 106 is the quickest STOCK ET/MPH.
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Old 08-16-2009, 08:59 PM   #8
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My '09 G8 GT ran 13.81 @ 104 mph bone stock, in hot weather. They have gone 13.50s with no mods already, in cooler weather. A buddy with just a tune on his went 13.20.

That being said, the Camaro should still be quicker. Just not enough track visits or data yet on the L99 cars.
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Old 08-16-2009, 09:13 PM   #9
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g8 also has 3.70 rear gear too. Well at least the gxp does, not sure about the GT
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Old 08-16-2009, 09:26 PM   #10
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I am converting my L99 to an LS3 when we put the Maggie on. The engine does not perform as well as my 2005 GTO automatic. The real solution is to offfer 3 options. The LS3 6 Speed manual, a LS3 Automatic with a gas guzzler tax (which I would glady pay) and the L99 for those who want to cruise.
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Old 08-16-2009, 10:00 PM   #11
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We went to the track this weekend with 5 Camaro's running T/O 2 L99's and rest LS3's. My wife had the fastest time slip of the day...with a baby seat in tote. Car is L99 equipped and 100% stock.
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Old 08-16-2009, 10:15 PM   #12
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My L99 only made 303hp on a chassis dyno, yet I still managed a best of 13.59 at the track (and a couple 13.8s). There is a lot of torque management that needs to be taken out, and a lot to be gained in the shifting. I think its going to be strong against the G8
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Old 08-17-2009, 05:28 AM   #13
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If GM would maximize the tune from the factory, no one would be bitchen.
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Old 08-17-2009, 09:25 AM   #14
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I beat a G8 GXP by 1.4 seconds last week at Bandimere in my completely stock L99.
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Old 08-17-2009, 10:35 AM   #15
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Well using my pocket dyno I got these times, this was the slowest of three launch attempts because I tried to feather the throttle and did it poorly lol My other launches were much quicker but I didnt get to pull the full quarter mile due to road situations "traffic, red lights, or cops lol".

ok img_0300 and 301(top left and top middle) are the feather throttle run... 302 and 303(top right bottom left) are a launch I did just prior but had to start lettin off the gas at about 70mph so everything after that time wise is trash. These are with a New era otr and NO TUNE. Temp was about 80 f at night with about 70% humidity and these were on a street not a track.
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Old 08-17-2009, 11:51 AM   #16
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Quote:
Originally Posted by BigDan View Post
Just from looking at how well the modded G8 GT's are doing in comparison to the l99 Camaro. 520 whp on a Maggie G8 GT auto, the closest l99 is 475whp.

Do the G8's run alot stronger?

It already sux that the L99 dyno's 40-50 whp less then a LS3 which = 75 hp difference at the crank, way more then the advertised 26 hp difference. Now there's a even more 30-40 whp difference between the L99 and G8 GT.

I not trying to bash the L99 but its a hard sell because of the huge difference in power.
There is no reason why an L99 Camaro should lose to a lightly modded G8 GT, unless its one of the slow L99s. But if its running as it should, the Camaro starts off with 40 more hp and about 100 lbs less. It also has a 3.27 gear rather than a 2.93.
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Old 08-17-2009, 02:01 PM   #17
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Quote:
Originally Posted by EAkrish View Post
my fiance has a g8 gt, and I take her every time by 7-8 car lengths... I have a LS3 in mine though.
Quote:
Originally Posted by DGthe3 View Post
There is no reason why an L99 Camaro should lose to a lightly modded G8 GT, unless its one of the slow L99s. But if its running as it should, the Camaro starts off with 40 more hp and about 100 lbs less. It also has a 3.27 gear rather than a 2.93.
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Old 08-17-2009, 03:24 PM   #18
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Quote:
Originally Posted by BigDan View Post
Just from looking at how well the modded G8 GT's are doing in comparison to the l99 Camaro. 520 whp on a Maggie G8 GT auto, the closest l99 is 475whp.

Do the G8's run alot stronger?

It already sux that the L99 dyno's 40-50 whp less then a LS3 which = 75 hp difference at the crank, way more then the advertised 26 hp difference. Now there's a even more 30-40 whp difference between the L99 and G8 GT.

I not trying to bash the L99 but its a hard sell because of the huge difference in power.

You can't compare a manual LS3 with an automatic L99. You would have to either decrease the LS3 numbers or increase the L99 numbers because of the different transmissions used.

If you put an LS3 in the A6 automatic camaro, it would make around 340 rwhp on average.
426 x .20 = 85
426 - 85 = 341 rwhp.

So there's only about a 20 rwhp difference between the two cars, because the average L99 is making about 320 rwhp.
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Old 08-18-2009, 01:08 AM   #19
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Originally Posted by SGOS252382 View Post
You can't compare a manual LS3 with an automatic L99. You would have to either decrease the LS3 numbers or increase the L99 numbers because of the different transmissions used.

If you put an LS3 in the A6 automatic camaro, it would make around 340 rwhp on average.
426 x .20 = 85
426 - 85 = 341 rwhp.

So there's only about a 20 rwhp difference between the two cars, because the average L99 is making about 320 rwhp.
Which we all knew from the get go when the ls3 was advertised for 426hp and the L99 for 400 so I guess it is what it is.
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