[Z06] Dyno Numbers with 300 Miles
11-22-2005, 09:32 PM
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Dyno Numbers with 300 Miles
I just got back from Speed Tek. Today was the ZO6's first pull on the Dynojet....Here are the numbers....
First Pull - Air Filter Removed 5:33 PM
Run Conditions: 70.50 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 463.07 Max Torque = 414.67
Second Pull - Airfilter Removed, Exhuast Fuse Pulled 5:35 PM
Run Conditions: 70.67 F, 29.64 in-Hg, Humidity: 9%,SAE: 0.98
MAX POWER = 450.26 Max Torque = 417.68
Third Pull - Airfilter Installed, Exhaust Fuse Installed 5:49 PM
Run Conditions: 69.49 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 454.26 Max Torque = 417.58
On all three pulls it was rich...Get some tuning and we'll see more HP!
First Pull - Air Filter Removed 5:33 PM
Run Conditions: 70.50 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 463.07 Max Torque = 414.67
Second Pull - Airfilter Removed, Exhuast Fuse Pulled 5:35 PM
Run Conditions: 70.67 F, 29.64 in-Hg, Humidity: 9%,SAE: 0.98
MAX POWER = 450.26 Max Torque = 417.68
Third Pull - Airfilter Installed, Exhaust Fuse Installed 5:49 PM
Run Conditions: 69.49 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 454.26 Max Torque = 417.58
On all three pulls it was rich...Get some tuning and we'll see more HP!
11-22-2005, 09:47 PM
#2
Le Mans Master
hey Ed, is speed tech equiped to tune/program the new Z.
looks like you made the same power with or without a filter. you're right in the mix as they say
looks like you made the same power with or without a filter. you're right in the mix as they say
11-22-2005, 09:54 PM
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Originally Posted by ShawnDFW
hey Ed, is speed tech equiped to tune/program the new Z.
looks like you made the same power with or without a filter. you're right in the mix as they say
looks like you made the same power with or without a filter. you're right in the mix as they say
11-22-2005, 10:26 PM
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It's hard to believe that pulling the exhaust fuse would lower the HP at all, let alone 13 HP. Could a higher engine temp have caused the drop in power in your second pull?
11-22-2005, 10:59 PM
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The first and second runs were done back to back....Temp probably had something to do with the difference. After it cooled for 14 or so minutes the third pull reflects a gain 4.30/7.40 HP/Torque.
11-23-2005, 12:27 AM
#6
Drifting
Originally Posted by ED Brantley
The first and second runs were done back to back....Temp probably had something to do with the difference. After it cooled for 14 or so minutes the third pull reflects a gain 4.30/7.40 HP/Torque.
11-23-2005, 12:32 PM
#7
Le Mans Master
Maybe I am misunderstanding this exhaust fuse, but why would you pull it at all on a dyno run? Even if it is in, the valve opens at what, 3,000-3,500 rpms? You're not going to see higher peak numbers either way, right?
What am I missing?
What am I missing?
11-23-2005, 05:55 PM
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St. Jude Donor '09
Originally Posted by ED Brantley
I just got back from Speed Tek. Today was the ZO6's first pull on the Dynojet....Here are the numbers....
First Pull - Air Filter Removed 5:33 PM
Run Conditions: 70.50 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 463.07 Max Torque = 414.67
Second Pull - Airfilter Removed, Exhuast Fuse Pulled 5:35 PM
Run Conditions: 70.67 F, 29.64 in-Hg, Humidity: 9%,SAE: 0.98
MAX POWER = 450.26 Max Torque = 417.68
Third Pull - Airfilter Installed, Exhaust Fuse Installed 5:49 PM
Run Conditions: 69.49 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 454.26 Max Torque = 417.58
On all three pulls it was rich...Get some tuning and we'll see more HP!
First Pull - Air Filter Removed 5:33 PM
Run Conditions: 70.50 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 463.07 Max Torque = 414.67
Second Pull - Airfilter Removed, Exhuast Fuse Pulled 5:35 PM
Run Conditions: 70.67 F, 29.64 in-Hg, Humidity: 9%,SAE: 0.98
MAX POWER = 450.26 Max Torque = 417.68
Third Pull - Airfilter Installed, Exhaust Fuse Installed 5:49 PM
Run Conditions: 69.49 F, 29.64 in-Hg, Humidity: 8%,SAE: 0.98
MAX POWER = 454.26 Max Torque = 417.58
On all three pulls it was rich...Get some tuning and we'll see more HP!
463.34/425.9 (Uncorrected) I predicted that the Perfect Pull would be
460/428 in another thread. Looks like those numbers are pretty close to what you did (uncorrected) today.
Here is my quote
The Perfect Pull
My best guess is that we will see a good pull showing 460 RWHP 428 lbs ft torque on a perfect 73 degree, 25% humidity, 29.92 day where there is a flatline 1.00 SAE correction factor on a Dynojet dyno, and that will be the upper limit of this motor stock. Any dynos lower than that will be primarily due to the COTP adding fuel, the ECM pulling timing or both, and or the Dynojet computer over or undercorrecting the pull.
So what are we to believe? I think the next 6 months will prove to be very interesting indeed. More dynos will come to the board, some believable, some unbelievable. The bottom line: This motor rocks! It is literally the C6.R motor in a street car, with cats, and other restrictions, that keep it down. Open it up, remove the viruses in the ECM, and 600 HP should be a breeze.
My best guess is that we will see a good pull showing 460 RWHP 428 lbs ft torque on a perfect 73 degree, 25% humidity, 29.92 day where there is a flatline 1.00 SAE correction factor on a Dynojet dyno, and that will be the upper limit of this motor stock. Any dynos lower than that will be primarily due to the COTP adding fuel, the ECM pulling timing or both, and or the Dynojet computer over or undercorrecting the pull.
So what are we to believe? I think the next 6 months will prove to be very interesting indeed. More dynos will come to the board, some believable, some unbelievable. The bottom line: This motor rocks! It is literally the C6.R motor in a street car, with cats, and other restrictions, that keep it down. Open it up, remove the viruses in the ECM, and 600 HP should be a breeze.
11-23-2005, 07:02 PM
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Originally Posted by Tom Steele
Maybe I am misunderstanding this exhaust fuse, but why would you pull it at all on a dyno run? Even if it is in, the valve opens at what, 3,000-3,500 rpms? You're not going to see higher peak numbers either way, right?
What am I missing?
What am I missing?
11-23-2005, 07:26 PM
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Originally Posted by Jim Hall
What is the altitude where you dynoed. Very sweet stock dyno numbers indeed. What I find interesting is the .98 correction factor. The temperature may have pulled 1% correction, but the baro should have given it back. Take a look at your actual dyno numbers:
463.34/425.9 (Uncorrected) I predicted that the Perfect Pull would be
460/428 in another thread. Looks like those numbers are pretty close to what you did (uncorrected) today.
Here is my quote
463.34/425.9 (Uncorrected) I predicted that the Perfect Pull would be
460/428 in another thread. Looks like those numbers are pretty close to what you did (uncorrected) today.
Here is my quote
11-25-2005, 10:32 PM
#12
Interesting, b/c those pulls reflect even lower power loss than in the standard C6. The C6's generally make 340ish, for a loss of 60 hp, while the Z06s make 460, for a power loss of 40 hp. That means either the C6 has a greater drivetrain loss or the Z06's 500 hp is underrated. More like the latter?
11-26-2005, 04:35 PM
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Originally Posted by cmb13
Interesting, b/c those pulls reflect even lower power loss than in the standard C6. The C6's generally make 340ish, for a loss of 60 hp, while the Z06s make 460, for a power loss of 40 hp. That means either the C6 has a greater drivetrain loss or the Z06's 500 hp is underrated. More like the latter?
11-28-2005, 06:07 PM
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Originally Posted by Jim Hall
What is the altitude where you dynoed. Very sweet stock dyno numbers indeed. What I find interesting is the .98 correction factor. The temperature may have pulled 1% correction, but the baro should have given it back. Take a look at your actual dyno numbers:
463.34/425.9 (Uncorrected) I predicted that the Perfect Pull would be
460/428 in another thread. Looks like those numbers are pretty close to what you did (uncorrected) today.
Here is my quote
463.34/425.9 (Uncorrected) I predicted that the Perfect Pull would be
460/428 in another thread. Looks like those numbers are pretty close to what you did (uncorrected) today.
Here is my quote
11-28-2005, 08:19 PM
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Great numbers, ED.
The torque is alittle low. Me think the best mods for the Z is a set of headers. It really wakes up the Z. I would keep everything stock except a set of headers, maybe a CAI when a good one is developed and some good tuning. That would give you 480 rwhp ad 460 rwtq, plenty to run around on the street or weekend track. :thumb:
The torque is alittle low. Me think the best mods for the Z is a set of headers. It really wakes up the Z. I would keep everything stock except a set of headers, maybe a CAI when a good one is developed and some good tuning. That would give you 480 rwhp ad 460 rwtq, plenty to run around on the street or weekend track. :thumb:
11-28-2005, 08:45 PM
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I was thinking the same about the torque. I looked at the mileage today..whopping 338! I contacted some folks about tuning. They can send off the PCM and have it back in about 4 days or so,perfect for the weekend!! I would like to do everything at once (tuning, headers, thermostat, airfilter) but everything is not available. These are the only mods I plan to do to the car. I'm looking forward to taking the car to the track this weekend.
