Stupid Question..
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From: Conway SC
Stupid Question..
In reviewing the pictures of the local dyno session we had Sat in which my C6 numbers were a little low I noticed that my car was below the top center on the barrel versus all the other cars were riding on the top center and I'm wondering if that would make any difference as it almost seems like it would be riding uphill in that position??? 
Other cars looked like this...
mine...
Other cars looked like this...
mine...
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
there aren't any stupid questions, just stupid answers.....
i don't think the position on the drum will make that much of a difference, as long as the wheel is on the drum and not dragging. just my thoughts maybe others will know better.
i don't think the position on the drum will make that much of a difference, as long as the wheel is on the drum and not dragging. just my thoughts maybe others will know better.
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From: Los Angeles
From what I've been seeing others get on this forum, 330 to 350 is normal. My experience is that those aftermarket exhaust systems are more for the noise than the performance. Others will disagree. Did you get a tune? Your A/F ratios will greatly affect the performance and you will get a much larger gain from that than anything else short of headers, cam or heads. Well prepped and tuned C5Z's with the same exhaust only get about 370. If you didn't get the tune, I suspect that you can get it up over 350 or 360. 
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From: Conway SC
Originally Posted by robvuk
From what I've been seeing others get on this forum, 330 to 350 is normal. My experience is that those aftermarket exhaust systems are more for the noise than the performance. Others will disagree. Did you get a tune? Your A/F ratios will greatly affect the performance and you will get a much larger gain from that than anything else short of headers, cam or heads. Well prepped and tuned C5Z's with the same exhaust only get about 370. If you didn't get the tune, I suspect that you can get it up over 350 or 360.
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From: Northern VA
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Actually, a few of us asked John that very question, whether it was better to have the rear wheels on top, in front, or behind the center of the dyno wheel. His answer, and the consensus agreement, was that it was better to have the car at the top or slightly behind the dyno so that it couldn't "walk" on the drum.
As for your horsepower, my C6 was just a little better than yours but I ran earlier in the day when it was significantly cooler.
As for your horsepower, my C6 was just a little better than yours but I ran earlier in the day when it was significantly cooler.
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From: Conway SC
Originally Posted by GentleBen
Actually, a few of us asked John that very question, whether it was better to have the rear wheels on top, in front, or behind the center of the dyno wheel. His answer, and the consensus agreement, was that it was better to have the car at the top or slightly behind the dyno so that it couldn't "walk" on the drum.
As for your horsepower, my C6 was just a little better than yours but I ran earlier in the day when it was significantly cooler.
As for your horsepower, my C6 was just a little better than yours but I ran earlier in the day when it was significantly cooler.
Guess I was a little dissappointed from some of the other posts around I had seen. Since I haven't been to the track the Dyno is the only way to measure the performance.. although the old butt meter says it's feels strong... guess I will add a Haltech Stinger intake and try again in the fall with cooler air. I would like to make at least 360rwhp at some point which is what my modified 2002 TA, that I traded on the C6, had.
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From: Dallas Tx
I'll bet it was the intake air temp being pretty warm.
There is another good topic from the guy working on LS2 edit and he explains the C6 LS2 pulls out a lot of power at higher temps.
If you do another dyno. Trying driving there maybe an hour in advance, open hood, let it cool off, maybe put a bag of ice on the intake. Then give it a rip on the dyno. The oil and engine mechanicals will still be plenty warm, but the cooler intake charge should help.
There is another good topic from the guy working on LS2 edit and he explains the C6 LS2 pulls out a lot of power at higher temps.
If you do another dyno. Trying driving there maybe an hour in advance, open hood, let it cool off, maybe put a bag of ice on the intake. Then give it a rip on the dyno. The oil and engine mechanicals will still be plenty warm, but the cooler intake charge should help.