[Z06] how much power can a LS6 make?
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
Well ok, how about 93 octane fuel? Pretty sure I could have more timing put in on that over the 91 here in California.
What is so funny is you are so willing to discount this as impossible when in reality it really is possible. You don't know what his friend's tuner did, you don't know what fuel he is running. His motor could be ready to blow up to produce peak numbers.
You are merely saying it is impossible. This I can tell you. My Z06 is a **** TON faster than my Vert, and my Z was trapping 4 mph higher than the next closest Z and 5 mph faster than a Porsche 911 Turbo.
What that relates to in HP you tell me.
What is so funny is you are so willing to discount this as impossible when in reality it really is possible. You don't know what his friend's tuner did, you don't know what fuel he is running. His motor could be ready to blow up to produce peak numbers.
You are merely saying it is impossible. This I can tell you. My Z06 is a **** TON faster than my Vert, and my Z was trapping 4 mph higher than the next closest Z and 5 mph faster than a Porsche 911 Turbo.
What that relates to in HP you tell me.
Race Director
Joined: Dec 2006
Posts: 12,396
Likes: 2,912
From: Fort Worth, Texas
Well ok, how about 93 octane fuel? Pretty sure I could have more timing put in on that over the 91 here in California.
What is so funny is you are so willing to discount this as impossible when in reality it really is possible. You don't know what his friend's tuner did, you don't know what fuel he is running. His motor could be ready to blow up to produce peak numbers.
You are merely saying it is impossible. This I can tell you. My Z06 is a **** TON faster than my Vert, and my Z was trapping 4 mph higher than the next closest Z and 5 mph faster than a Porsche 911 Turbo.
What that relates to in HP you tell me.
What is so funny is you are so willing to discount this as impossible when in reality it really is possible. You don't know what his friend's tuner did, you don't know what fuel he is running. His motor could be ready to blow up to produce peak numbers.
You are merely saying it is impossible. This I can tell you. My Z06 is a **** TON faster than my Vert, and my Z was trapping 4 mph higher than the next closest Z and 5 mph faster than a Porsche 911 Turbo.
What that relates to in HP you tell me.
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
Safety Car
Joined: Jun 2006
Posts: 3,787
Likes: 2
From: Wildomar CA
Maybe with my car you could do better than I could
and the general rule of thumb is 15% driveline loss. Again like you say with dynos it is a "guide" and they can all be different. So his friend's "different dyno" factoring in the "generally accepted 15% M6 driveline loss" 489 HP is possible without a cam. 
BTW there wasn't a whole hell of a lot of difference between a car my tuner did with your mods and yours as far as numbers go.
Mine was higher because I spent $1000 for 10 HP which is something you weren't willing to do, but since it was to compliment a future H/C package I did it.
Would it make you feel better if I spent the $100 to go down the street to another well known tuner and try his dyno out, or will his be wrong too?
Safety Car
Joined: Jun 2006
Posts: 3,787
Likes: 2
From: Wildomar CA
Driver skill and tires can have a huge impact on trap speed...just because you add an EWP, UDP, light weight clutch and wheels and gain 50rwhp doesn't mean your engine is making 55 more hp at the crank...the ls6 is just not going to pick up 84hp from bolt-ons, unless you can register the extra 40hp the vararam is adding at 170mph
I can't seem to recall what L88s were rated from the factory...can you help me remember? I seem to recall they have been putting out just a little bit more than that number
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Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
I don't think there are any factory freaks anymore since the start of the LSx motors. Although it's a shame. I had a factory freak once. Thing hauled *** and nobody knew why.
LS6's are all under-rated from the factory. They make 360RWHP on most dynos. That means they're making over 420BHP. The 01 LS6's were under-rated too making 340+RWHP on most dynos making them around 400BHP.
LS6's are all under-rated from the factory. They make 360RWHP on most dynos. That means they're making over 420BHP. The 01 LS6's were under-rated too making 340+RWHP on most dynos making them around 400BHP.
....granted i hadnt done a tune up to the car when i first purchased it before dynoing it. The owner before had only done oil changes and nothing else. My car, when it was stock, dynoed a weak 320rwhp and 318tq on a dyno jet in 78-80* weather in October.
Le Mans Master
Joined: Jul 2009
Posts: 9,526
Likes: 12
From: Los Angeles California
aww man i i wish mine woulda done that....granted i hadnt done a tune up to the car when i first purchased it before dynoing it. The owner before had only done oil changes and nothing else. My car, when it was stock, dynoed a weak 320rwhp and 318tq on a dyno jet in 78-80* weather in October.
....granted i hadnt done a tune up to the car when i first purchased it before dynoing it. The owner before had only done oil changes and nothing else. My car, when it was stock, dynoed a weak 320rwhp and 318tq on a dyno jet in 78-80* weather in October.Do you know what the AFR on yours was? Did it have any intake mods? That often changes a lot on a dyno if the car's been driven on the intake mods for a while and THEN dyno'd. CAIs sometimes lower the AFR on the dyno because the car gets more air while moving.
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
A tune up makes a world of difference. Especially on motors with 50K+ miles. Mine dyno'd 355RWHP on the first shot. But the AFR was 10.5:1 so it was obviously running rich.
Do you know what the AFR on yours was? Did it have any intake mods? That often changes a lot on a dyno if the car's been driven on the intake mods for a while and THEN dyno'd. CAIs sometimes lower the AFR on the dyno because the car gets more air while moving.
Do you know what the AFR on yours was? Did it have any intake mods? That often changes a lot on a dyno if the car's been driven on the intake mods for a while and THEN dyno'd. CAIs sometimes lower the AFR on the dyno because the car gets more air while moving.
Race Director
Joined: Dec 2006
Posts: 12,396
Likes: 2,912
From: Fort Worth, Texas
If we factor a 15% driveline loss and a typical dyno number at 360rwhp, then a stock LS6 wouldn't be picking up 84 HP from bolt-ons. Since it would be rated higher stock than the factory advertised 405 hp.
I can't seem to recall what L88s were rated from the factory...can you help me remember? I seem to recall they have been putting out just a little bit more than that number
I can't seem to recall what L88s were rated from the factory...can you help me remember? I seem to recall they have been putting out just a little bit more than that number
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
If we factor a 15% driveline loss and a typical dyno number at 360rwhp, then a stock LS6 wouldn't be picking up 84 HP from bolt-ons. Since it would be rated higher stock than the factory advertised 405 hp.
I can't seem to recall what L88s were rated from the factory...can you help me remember? I seem to recall they have been putting out just a little bit more than that number
I can't seem to recall what L88s were rated from the factory...can you help me remember? I seem to recall they have been putting out just a little bit more than that number
Burning Brakes
Joined: Aug 2009
Posts: 816
Likes: 0
From: Virginia Beach Virginia
A friend on here made 376 rwhp with ARH high flow cats x pipe, the stock Ti Exhaust and a blackwing CAI on 93 oct. He had some valvetrain issues as well. Tuner said it should have had higher numbers.
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
Nobody's asked about these aftermarket valves that were mentioned, does the guy have ported heads? I think one could probably squeak out 400whp with a stock cam and ported heads. We can all agree LTs, CAI, and a tune get the LS6 to around 385whp and 15whp is a pretty reasonable expectation from heads alone. If you factor in an erroneous drivetrain loss of 18%, there's your ~489 at the crank.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Guys,
My good friend,that I do not want to argue with,says his 2004 Z06 makes 489 horses at the fly wheel. The car is modified with the following: CAI, headers, borla exhaust, tighter valve spings and some kind of different valves. He has not changed his cam.
What are your thoughts here? With only these mods, wouldn't he be fortunate to get to 450 horses?
My good friend,that I do not want to argue with,says his 2004 Z06 makes 489 horses at the fly wheel. The car is modified with the following: CAI, headers, borla exhaust, tighter valve spings and some kind of different valves. He has not changed his cam.
What are your thoughts here? With only these mods, wouldn't he be fortunate to get to 450 horses?
and 389 with out a cam is still pushing it.