10.65 @ 135.80mph
Le Mans Master
Joined: Nov 2005
Posts: 7,059
Likes: 366
From: Kendall Park NJ
Congrats. 
Very nice pass. The speed shows your potential for a high nine second run. The key will be in the sixty along with the seat time you had mentioned. You will need to replace that clutch to have any shot at this but I'm sure you know that.
Good luck.
Very nice pass. The speed shows your potential for a high nine second run. The key will be in the sixty along with the seat time you had mentioned. You will need to replace that clutch to have any shot at this but I'm sure you know that.Good luck.
Thread Starter
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
The clutch is the ACT twin, and brand new. This was the first and only pass on it, since the ls7 would not let me do a burnout and launch(glazed over with 600hp). I'm just going to run the 1/8, since we have a good track here in houston. Once I get 10-20 passes with this clutch, I will take it back to RPR in Houston(old HRP) and go for a better ET. I don't get a warning, just the boot after 1 pass.
I feel that this clutch will allow me to go high 1.6's without risking the rear end, where the spec 3 would just bite hard, and I broke RPM rear ends with much less power.
What do you think about ls7 manifolds and the ZR1 cam? Looking at 10.3's on the stock motor, and keeping it quiet? England Green will custom spec a baby blower cam for me, but want to see what you all suggest. Fiancee will not allow a bigger cam. Thanks!
Mark
Le Mans Master
Joined: Nov 2005
Posts: 7,059
Likes: 366
From: Kendall Park NJ
Thanks, Gary! Followed you guys for years. I probably read all of you and Rob's posts over the last 2 years.
The clutch is the ACT twin, and brand new. This was the first and only pass on it, since the ls7 would not let me do a burnout and launch(glazed over with 600hp). I'm just going to run the 1/8, since we have a good track here in houston. Once I get 10-20 passes with this clutch, I will take it back to RPR in Houston(old HRP) and go for a better ET. I don't get a warning, just the boot after 1 pass.
I feel that this clutch will allow me to go high 1.6's without risking the rear end, where the spec 3 would just bite hard, and I broke RPM rear ends with much less power.
What do you think about ls7 manifolds and the ZR1 cam? Looking at 10.3's on the stock motor, and keeping it quiet? England Green will custom spec a baby blower cam for me, but want to see what you all suggest. Fiancee will not allow a bigger cam. Thanks!
Mark
The clutch is the ACT twin, and brand new. This was the first and only pass on it, since the ls7 would not let me do a burnout and launch(glazed over with 600hp). I'm just going to run the 1/8, since we have a good track here in houston. Once I get 10-20 passes with this clutch, I will take it back to RPR in Houston(old HRP) and go for a better ET. I don't get a warning, just the boot after 1 pass.
I feel that this clutch will allow me to go high 1.6's without risking the rear end, where the spec 3 would just bite hard, and I broke RPM rear ends with much less power.
What do you think about ls7 manifolds and the ZR1 cam? Looking at 10.3's on the stock motor, and keeping it quiet? England Green will custom spec a baby blower cam for me, but want to see what you all suggest. Fiancee will not allow a bigger cam. Thanks!
MarkKeep us posted on your progress.
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Thread Starter
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
Thanks guys! I was so happy after the pass. Figured I would have to give it a couple more trys.
Will do.
Thanks, Gary. Looks like I am going back to 1/8 racing for the next month or so. We have a decent 1/8 track here in Houston that has ok prep on Sundays. I'll work on running the car, especially the clutch slip and 60ft, since the 3/4 shift is not near as important to my ET right now.
That is awesome!! Tell Stephen Jay from CT said Hi!
Nice numbers! There is more in it for sure. Awesome for a street car
Nice numbers! There is more in it for sure. Awesome for a street car
Sorry Mark, it was too early in the morning plus I was getting ready for my daughter's basketball game. I missed the whole clutch explanation. If you come out relatively soft and cut a high 1.6x, you should drop your ET by about 2 tenths. This would put you in the 10.4s. A slighly more aggressive launch to put you in the high 1.5x range could drop another 1 1/2 tenths. This should not overstress your rear depending on technique; however, the decision is yours. I will let the experts give you advice regarding the manifold and cam since I am unfamiliar with the FI setup.
Keep us posted on your progress.
Keep us posted on your progress.
Le Mans Master
Joined: Nov 2005
Posts: 7,059
Likes: 366
From: Kendall Park NJ
Thanks, Gary. Looks like I am going back to 1/8 racing for the next month or so. We have a decent 1/8 track here in Houston that has ok prep on Sundays. I'll work on running the car, especially the clutch slip and 60ft, since the 3/4 shift is not near as important to my ET right now.
The 1/8 mile is a great idea. If you track all of your passes and put them on an Excel spreadsheet, you can predict your 1/4 mile ET by adding the calculated differences between the 1/8 and 1/4 of previous runs. The extra seat time will hone your skills.
Thread Starter
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
Thanks! I want to watch the black beast run down the track. I'll see you out there soon. Gary and everybody else. A few questions if you don't mind.
I see a bunch of you guys running GTO spares. What ET effect do you guys see? I always ran weld draglites on my mustangs and they were worth a solid .1-.2. I had a set of GTO spares for my Z06, but sold them, as I wasn't completely sure they were safe. Aren't the offsets slightly different? Did you guys grind the hub, or the wheel?
Cage recommendations? What does everybody run, and do you feel safe. My shop does their own custom welded in cages that are very nice, with removable bars, but not sure I want a weld in cage unless there is a difference in safety.
LS7 exhaust? Andbody have a guess on what power I would gain? I blew out the stock LS3 cats in just a couple thousand miles. I have new LS3 cats on, but they should be fried soon. I'll do headers if they are just a waste of money.
Thanks!
Le Mans Master
Joined: Nov 2005
Posts: 7,059
Likes: 366
From: Kendall Park NJ
Thanks! I want to watch the black beast run down the track. I'll see you out there soon. Gary and everybody else. A few questions if you don't mind.
I see a bunch of you guys running GTO spares. What ET effect do you guys see? I always ran weld draglites on my mustangs and they were worth a solid .1-.2. I had a set of GTO spares for my Z06, but sold them, as I wasn't completely sure they were safe. Aren't the offsets slightly different? Did you guys grind the hub, or the wheel?
Cage recommendations? What does everybody run, and do you feel safe. My shop does their own custom welded in cages that are very nice, with removable bars, but not sure I want a weld in cage unless there is a difference in safety.
LS7 exhaust? Andbody have a guess on what power I would gain? I blew out the stock LS3 cats in just a couple thousand miles. I have new LS3 cats on, but they should be fried soon. I'll do headers if they are just a waste of money.
Thanks!
I would strongly recommend getting a rollbar that fits exactly like you want it to. Whether it be off the self or custom. You must live with it. I have hit my elbow on some and have been cramped by others. Take your time before you make a decision.
LS7 manifolds are good, the cats have failed on me but we always end up swapping out to ARHs. Nick builds a great product.
Race Director
Joined: Dec 2006
Posts: 12,383
Likes: 2,905
From: Fort Worth, Texas
Congrats again Mark, too bad you can't run up here as they're a little more lenient. Strong mph, skinnies and cam should put you over 140! Thought you wanted to keep the noise to a min, which is why I mentioned the ls7 manifolds with cats. Z51 trans gears would the help 60'...of course I know you haven't really launched the car yet
Thread Starter
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
Congrats again Mark, too bad you can't run up here as they're a little more lenient. Strong mph, skinnies and cam should put you over 140! Thought you wanted to keep the noise to a min, which is why I mentioned the ls7 manifolds with cats. Z51 trans gears would the help 60'...of course I know you haven't really launched the car yet
Yeah, 2800rpm is not really launching, but glad I got a solid pass in.
Le Mans Master
Joined: Jun 2003
Posts: 9,251
Likes: 217
From: 2007 Nat'l Corvette Challenge 11.50 index Champ. New Jersey
Nice going! There is more in it as she sits I bet with a better launch.
I'm just wondering why you backed back up into the water AFTER you drove through the water? I think you should go a bit slower through the water as well so you don't sling water up into any of the wheel wells, especially the fronts. Dragging water up to the starting line is not so good as you know...
Keep at it!
Ron
I'm just wondering why you backed back up into the water AFTER you drove through the water? I think you should go a bit slower through the water as well so you don't sling water up into any of the wheel wells, especially the fronts. Dragging water up to the starting line is not so good as you know...
Keep at it!
Ron
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
I'm just wondering why you backed back up into the water AFTER you drove through the water? I think you should go a bit slower through the water as well so you don't sling water up into any of the wheel wells, especially the fronts. Dragging water up to the starting line is not so good as you know...
but I don't think he actually went entirely through the water the first time, he appears to actually go around it/past it at an angle and then backs in to it from what I can tell. 
Thread Starter
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
Yes, I did go around the water. The waterbox sometimes is too big on street nights and there is no avoiding it completely, there was no standing water where I drove through.
Last edited by winters97gt; Jan 26, 2011 at 09:06 PM.