MTI 2008 LS3 C6 Baseline Dyno
Team Owner
Joined: Jun 2001
Posts: 26,714
Likes: 344
From: Houston, TX
It's all relative. Yes, I feel damn lucky to have an '08 with all the performance goodies, and I've already got almost 1200 miles on the car. And yes, it feels fast!
But I'll never look down on you folks with the old.......slow........dated............. yesterdays news..........LS........2s
Okay, I'm done gloating. Now the Z06 owners can have some fun at my expense
But I'll never look down on you folks with the old.......slow........dated............. yesterdays news..........LS........2s
Okay, I'm done gloating. Now the Z06 owners can have some fun at my expense
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
It's all relative. Yes, I feel damn lucky to have an '08 with all the performance goodies, and I've already got almost 1200 miles on the car. And yes, it feels fast!
But I'll never look down on you folks with the old.......slow........dated............. yesterdays news..........LS........2s
Okay, I'm done gloating. Now the Z06 owners can have some fun at my expense
But I'll never look down on you folks with the old.......slow........dated............. yesterdays news..........LS........2s
Okay, I'm done gloating. Now the Z06 owners can have some fun at my expense
all you 08 owners are some lucky ********
Instructor
Joined: May 2007
Posts: 211
Likes: 0
From: Mountain View CA
This is very painful. At least if I had an '05 I would have been driving that around for a while before this big hit.
Melting Slicks
Joined: Aug 2000
Posts: 3,107
Likes: 0
From: Houston, TX
Incredible numbers Zach on the stock '08. Wish I was there to witness the pulls. Looking forward to seeing the numbers after mods, and to get started on my own modding as well. See ya guys soon! 
Melting Slicks
Joined: Jun 2004
Posts: 2,130
Likes: 54
From: Granbury, Pecan Plantation TX
I have a chunk of money coming my way soon, i had plans to mod my 06 a6 but seeing insane numbers on LS3 make me kinda wonder.
Dont know if i should keep my 06 and drive it like it is and wait about a year or so, or mod it, or say the heck with it and buy a new 08 this summer?
I would think even better flowing heads, then a intake, cam , CIA and headers would get ya in the 500rwhp range pretty easy.
Dont know if i should keep my 06 and drive it like it is and wait about a year or so, or mod it, or say the heck with it and buy a new 08 this summer?
I would think even better flowing heads, then a intake, cam , CIA and headers would get ya in the 500rwhp range pretty easy.
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Assumption #2: LS2 400hp was based on old SAE protocol (ie. not as mounted in car) and when retested to new standard is actually 395. This "might" be the 395 listed in the LS2/LS3 comparison chart at the homecoming release. This reduction would actually jive with some other manufacturers. I can't think of any vehicles that went UP with no changes to the engine when tested on each procedure in subsequent years.
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Team Owner
Joined: Jun 2005
Posts: 46,295
Likes: 2,596
From: Northern, VA
St. Jude Donor '15
"In honor of jpee"
I did find out about the coming LS3, I had not yet hopped on the forum yet to see this discussion, since I was pretty well informed about the LS2 (was looking at GTOs for a while). I didnt anticipate a HUGE underrating (400whp stock?!) like this. I just figured I could live without the 30 crank rated horsepower (thinking like 10-15 RWHP difference) and just make up the difference with a mod or two.
This is very painful. At least if I had an '05 I would have been driving that around for a while before this big hit.
This is very painful. At least if I had an '05 I would have been driving that around for a while before this big hit.
Safety Car
Joined: Jan 2006
Posts: 3,713
Likes: 0
From: Littleton CO
Those are even higher numbers than LG posted for their test. Did this vehicle have the optional exhaust? Either the LS3 is underrated or the LS2 was overrated.I agree those numbers make me want to cry but I don't think the LS2 was over rated. My car made 342 RWHP stock on an A6 unless there was less than 15% drivetrain loss then that puts me right at about 402 HP
Safety Car
Joined: May 2005
Posts: 3,990
Likes: 1
From: Corpus Christi Texas
If one is into keeping his/her C6 stock, the LS3 is the way to go. Same mods vs same mods, LS3 is going to be the winner. Always someone quicker though. One can still make the LS2 a beast. That's why I've had LS1 cars blast my slightly modded LS2 at the strip. I said earlier, this dyno is almost equal to my modded LS2, above 4000rpm at least. Down low, I've got up to 20rwtq and 15rwhp advantage. A tune might very well equal that and anything like long-tubes is going to best my car. Granted my numbers come from a different dynojet on a different day so it's kind of comparing red to green apples. On same day, same dyno, I could be the loser or the winner or tied. Dyno racing though but stock for stock, LS3 wins hands down.
Le Mans Master
Joined: Oct 2005
Posts: 5,054
Likes: 889
From: Tampa Florida
Yeah, it appears that the only way to match the 08 LS3 with headers and tune is that the LS2 needs headers, CAI, cam and tune. A good tune on a LS3 with headers could put it between 430-435rwhp. You may have to add ported intake/tb or install the FAST intake to get those numbers. I'm at 379/366 with headers, CAI, ported intake/tb and tune. It is apparent that I better install the right cam in order to achieve 430rwhp. Actually, 420 rwhp would be sufficient for me.
Team Owner
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
LS3 has a larger bore and far better heads... many people modding are using L92s as their budget head of choice.
So you've got a motor w/ heads on it from the factory... 243s just can't compete w/ L92s.
So you've got a motor w/ heads on it from the factory... 243s just can't compete w/ L92s.
