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C6 Back from Cartek

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Old Aug 4, 2005 | 03:14 PM
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Default C6 Back from Cartek

Got my car back from Cartek (C6, Z51, 6sp, 'Vert). Baseline dyno (CORSA Sport, Halltech, Jeremy Formato tune) was 366 HP and 356 Torque.

After Stage 2x Cam/heads, Kooks (1 3/4"), X Pipe, Magnaflows and tune, the numbers were 452 HP and 404 Torque.

Cartek also changed gears to 4.10 and added a stronger clutch.

Dave will post the Dyno sheet shortly.

Extremely impressive performance. The rougher idle and gears took a couple of days getting used to but I am very very impressed. I can actually launch it better with this set up than stock. I saw another thread that stated higher gears can result in better launches because the wheels are turning slower-(I would think the stronger clutch is also helping-it has much less free play) .

Dave's service and follow up could not have been any better.
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Old Aug 4, 2005 | 03:31 PM
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How does the car respond with that hp and those gears. I too am looking at a similar setup, but I was thinking 373s or 390s. Does the car break loose in second? third? I want something that will launch, but not something that spins the tires every time I touch the pedal. How is the driveablity being it is the Z51 tranny, I know it is geared like the Z06
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Old Aug 4, 2005 | 03:58 PM
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Originally Posted by vertC6
How does the car respond with that hp and those gears. I too am looking at a similar setup, but I was thinking 373s or 390s. Does the car break loose in second? third? I want something that will launch, but not something that spins the tires every time I touch the pedal. How is the driveablity being it is the Z51 tranny, I know it is geared like the Z06
I have not had any trouble with the car breaking loose as long as the suspension was under load ie going in a straight line. I too was worried about that but my fears were ungrounded (all my driving since the mods were on dry pavement). I would strongly suggest you drive a car with the different gears if you can. To me it was getting used to launching very gently during normal driving otherwise you find (and hear with my exhaust set up) you are winding out more than you anticipated. Again it only took a couple of days to get used to it.
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Old Aug 4, 2005 | 05:14 PM
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Originally Posted by vertC6
How does the car respond with that hp and those gears. I too am looking at a similar setup, but I was thinking 373s or 390s. Does the car break loose in second? third? I want something that will launch, but not something that spins the tires every time I touch the pedal. How is the driveablity being it is the Z51 tranny, I know it is geared like the Z06
I had a blown Mustang Cobra with 425 RWHP and 4.10's... it's a little apples and oranges I know, because the 4.6L had a peaky torque curve compared to the C6, but trust me on this, you will LOVE the 4.10's. The only reason I would think you would not want them is if you are tuning your car for the 1/4 mile and need to hit redline precisely the traps. Otherwise, for street driving, the launches will be easier because you don't have to rev the engine to get the car moving, and it will be more controllable and easier to recover if they do break loose. You WILL have a really quick 1-2 shift, because the first shift will be somewhere in the 30-35MPH range, but 2nd will pull really hard. You'll get used to it and like it.

Here's the effect on everyday driving... you will be able to use 2nd a lot more. If you roll through parking lots or stop signs (even though you shouldn't ), in 2nd you'll have plenty of torque to pull you along without going into 1st. 1st will be needed only from a dead stop. With 2 overdrives (something I didn't have in the Cobra), you have no significant issues with cruising, gas milage, or top speed.

Highly recommended!

SMM
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Old Aug 4, 2005 | 05:29 PM
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To pick up on what SMM, it also makes 5th and 6th much more available. I never used 6th and often left in 4th as it was much closer to the stock power band of 4,000 RPM
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Old Aug 5, 2005 | 09:36 AM
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Car sounds like a totally streetable beast, good job Cartek and congrats.
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Old Aug 5, 2005 | 11:35 AM
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Originally Posted by Geoff17
Got my car back from Cartek (C6, Z51, 6sp, 'Vert). Baseline dyno (CORSA Sport, Halltech, Jeremy Formato tune) was 366 HP and 356 Torque.

After Stage 2x Cam/heads, Kooks (1 3/4"), X Pipe, Magnaflows and tune, the numbers were 452 HP and 404 Torque.

Cartek also changed gears to 4.10 and added a stronger clutch.

Dave will post the Dyno sheet shortly.

Extremely impressive performance. The rougher idle and gears took a couple of days getting used to but I am very very impressed. I can actually launch it better with this set up than stock. I saw another thread that stated higher gears can result in better launches because the wheels are turning slower-(I would think the stronger clutch is also helping-it has much less free play) .

Dave's service and follow up could not have been any better.
Thank you for the props. I look forward to meeting you in person. Julio is going to have the dyno sheet ready to post today and I will put it up.
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Old Aug 5, 2005 | 11:39 AM
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I am curious about the cost?

V
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Old Aug 5, 2005 | 12:19 PM
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Originally Posted by Geoff17
Got my car back from Cartek (C6, Z51, 6sp, 'Vert). Baseline dyno (CORSA Sport, Halltech, Jeremy Formato tune) was 366 HP and 356 Torque.

After Stage 2x Cam/heads, Kooks (1 3/4"), X Pipe, Magnaflows and tune, the numbers were 452 HP and 404 Torque.

Cartek also changed gears to 4.10 and added a stronger clutch.

Dave will post the Dyno sheet shortly.

Extremely impressive performance. The rougher idle and gears took a couple of days getting used to but I am very very impressed. I can actually launch it better with this set up than stock. I saw another thread that stated higher gears can result in better launches because the wheels are turning slower-(I would think the stronger clutch is also helping-it has much less free play) .

Dave's service and follow up could not have been any better.
Nice numbers. I will be looking for a cam next year. Good luck.
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Old Aug 5, 2005 | 01:24 PM
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Originally Posted by vishsvette
I am curious about the cost?

V
V, check out the CARTEK.net web site, they have all the prices quoted.
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Old Aug 5, 2005 | 03:43 PM
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Here is the before and after dyno graph.

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Old Aug 5, 2005 | 07:37 PM
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very nice graph. Didn't lose any torque anywhere.

I think Id've gone with a slightly more aggressive (highter RPM) cam, but, I dont have a vette. So its not up to me yet.
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Old Aug 6, 2005 | 02:28 AM
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Originally Posted by Geoff17
Got my car back from Cartek (C6, Z51, 6sp, 'Vert). Baseline dyno (CORSA Sport, Halltech, Jeremy Formato tune) was 366 HP and 356 Torque.

After Stage 2x Cam/heads, Kooks (1 3/4"), X Pipe, Magnaflows and tune, the numbers were 452 HP and 404 Torque.

Cartek also changed gears to 4.10 and added a stronger clutch.

Dave will post the Dyno sheet shortly.

Extremely impressive performance. The rougher idle and gears took a couple of days getting used to but I am very very impressed. I can actually launch it better with this set up than stock. I saw another thread that stated higher gears can result in better launches because the wheels are turning slower-(I would think the stronger clutch is also helping-it has much less free play) .

Dave's service and follow up could not have been any better.

Can you describe how much "rougher" the idle is? Does the car shake at the stoplight or does it just feel a little different? I'm considering getting the same work done but the car also has to pass the "wife" test for cruising around. She would kill me if I turned it into another one of my hotrod type cars Thanks, Jeff
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Old Aug 6, 2005 | 05:41 AM
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Originally Posted by Jagcvette
Can you describe how much "rougher" the idle is? Does the car shake at the stoplight or does it just feel a little different? I'm considering getting the same work done but the car also has to pass the "wife" test for cruising around. She would kill me if I turned it into another one of my hotrod type cars Thanks, Jeff
The car does shake slightly at stoplights. If that is a concern might want to consider a stage 2 cam?
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Old Aug 14, 2005 | 12:21 AM
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Originally Posted by Geoff17
Got my car back from Cartek (C6, Z51, 6sp, 'Vert). Baseline dyno (CORSA Sport, Halltech, Jeremy Formato tune) was 366 HP and 356 Torque.

After Stage 2x Cam/heads, Kooks (1 3/4"), X Pipe, Magnaflows and tune, the numbers were 452 HP and 404 Torque.

Cartek also changed gears to 4.10 and added a stronger clutch.

Dave will post the Dyno sheet shortly.

Extremely impressive performance. The rougher idle and gears took a couple of days getting used to but I am very very impressed. I can actually launch it better with this set up than stock. I saw another thread that stated higher gears can result in better launches because the wheels are turning slower-(I would think the stronger clutch is also helping-it has much less free play) .

Dave's service and follow up could not have been any better.
You've impressed the hell out of me!

Jim Hall
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Old Aug 14, 2005 | 11:36 AM
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You dropped the Corsa's and went with the Magnaflow system? Why?

Jerry
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Old Aug 14, 2005 | 08:19 PM
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I'm no math wiz but counting for the 15% or so of driveline drag your putting out 522 hp at the motor! Watch out C6 Z06!
I can't wait to get a H/C set up on my C6!
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Old Aug 15, 2005 | 01:18 AM
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Originally Posted by Pio
I'm no math wiz but counting for the 15% or so of driveline drag your putting out 522 hp at the motor! Watch out C6 Z06!
I can't wait to get a H/C set up on my C6!
Wait till you see a stock Z06 with just a cam!
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Old Aug 15, 2005 | 03:02 PM
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Originally Posted by MyFirstCorvette
Wait till you see a stock Z06 with just a cam!
Very very true. What is amazing is that Cartek can get around 522 at the crank with a heads cam package. I wonder why Chevy didn't do something similar instead of going to 427 cubes. Are there durability issues they didn't want to deal with.
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Old Aug 15, 2005 | 03:10 PM
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Originally Posted by Pio
Very very true. What is amazing is that Cartek can get around 522 at the crank with a heads cam package. I wonder why Chevy didn't do something similar instead of going to 427 cubes. Are there durability issues they didn't want to deal with.
Because Cartek (or almost any tuner) doesn't have to pass emissions, and warranty the car for 3 years, 36,000 miles +. Also, not everyone who has a C6 will want the same driving characteristics. GM obviously has to satisfy a much larger base of customers with different expectations.

Also, we're just comparing peak hp #'s. I have no doubt that the LS7 will make more hp and tq under the curve, and that's where making the power counts!

Still, 522 flywheel HP is impressive. Modded LS6's have been getting close to the 500 REAR wheel horsepower NA for a year or so. I'm guessing the LS2 isnt far behind and should be surpassing it soon!
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