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Old May 9, 2022 | 04:17 PM
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Originally Posted by Johnny Hardcore
I ran 3.90s in my silver 99 coupe. But it was basically stock with just a catback and Hurst short throw. I liked the 3.90s but I love the 4.10s. I ran 4.10s at two power levels in my black 99 MN6 coupe (prior to procharging it). At 418rwhp and 428rwhp my car loved that gear. I like the Nitto NT555R2 DRs. Which I'm currently running on the car with 634rwhp/568rwtq. So far they are very good, just street driving the car though. No track time with the new setup. Not interested in replacing my trans or another diff...again...at this juncture. Plus I was booted from Island Dragway for not having a cage...200rwhp ago.
LOLOLOL, funny but sad too. I will be racing at https://beechbend.com/dragstrip/

I'm not sure what my times will be, but I guess they will 86 me if I exceed the NHRA protocol. But in a way, that will also tell me I am truly fast.
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Old May 9, 2022 | 04:20 PM
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With that cam...if your car isn't hunting and surging at low speed parking lot type driving the gears could be bigger. With a Z06 M12 trans you are equal in gearing to a MN6 C5 with a 3.90 (see chart for comparison).

I don't have first hand experience with the M12, so can't give firsthand feedback on the topic of a gear change with that trans factored in.
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Old May 9, 2022 | 04:21 PM
  #43  
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Originally Posted by Napoleon_Tanerite
Wow, so you fucked around in a residential area and got away with it because there wasn't enough hard evidence? And you somehow think that makes it ok?

You're an idiot. The fact that you got so mad about being called out that you made multiple shotgun posts trying to defend yourself while throwing insults AND sent me a PM with more insults tells me you're EXACTLY the kind of scumbag I thought you were. It all fits together.
I have a Master's Degree. I can't be that stupid. And you are a small gay dweeb, right? With a microscopic *****?
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Old May 9, 2022 | 04:22 PM
  #44  
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Originally Posted by zztopo
LOLOLOL, funny but sad too. I will be racing at https://beechbend.com/dragstrip/

I'm not sure what my times will be, but I guess they will 86 me if I exceed the NHRA protocol. But in a way, that will also tell me I am truly fast.
Bingo! You may find out in short order what kind of power it's making without having to dyno it. The slips won't lie.
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Old May 9, 2022 | 04:26 PM
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Originally Posted by Johnny Hardcore
With that cam...if your car isn't hunting and surging at low speed parking lot type driving the gears could be bigger. With a Z06 M12 trans you are equal in gearing to a MN6 C5 with a 3.90 (see chart for comparison).

I don't have first hand experience with the M12, so can't give firsthand feedback on the topic of a gear change with that trans factored in.
The Vette chatters badly coming into 1st gear. My SS had a 3 disc clutch with a HUGE cam, and it was smooth as silk. So I don't know what to do with the chatter on the C5. I am trying to find the rpm sweet spot, but so far, she rattles no matter what. After 1st gear, she is fine.
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Old May 9, 2022 | 04:29 PM
  #46  
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Originally Posted by Johnny Hardcore
Bingo! You may find out in short order what kind of power it's making without having to dyno it. The slips won't lie.
It's supposed to get a 250 wetshot and installed on 5/30. Then I hope I will get some dyno numbers. It will also need a new tune. Right now, she is running rich. I can smell it.
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Old May 9, 2022 | 05:36 PM
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Originally Posted by zztopo
The Vette chatters badly coming into 1st gear. My SS had a 3 disc clutch with a HUGE cam, and it was smooth as silk. So I don't know what to do with the chatter on the C5. I am trying to find the rpm sweet spot, but so far, she rattles no matter what. After 1st gear, she is fine.
Chatter could be the clutch itself. Could also be the clutch isn't broken in yet. What clutch is in it and how many miles on it, any clue?
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Old May 9, 2022 | 05:39 PM
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Originally Posted by zztopo
It's supposed to get a 250 wetshot and installed on 5/30. Then I hope I will get some dyno numbers. It will also need a new tune. Right now, she is running rich. I can smell it.
As you know, the tune is mission critical. Definitely not where you want to cheap out or have a hobbiest vs. a seasoned pro do the tune.




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Old May 9, 2022 | 05:49 PM
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Originally Posted by Johnny Hardcore
With that cam...if your car isn't hunting and surging at low speed parking lot type driving the gears could be bigger. With a Z06 M12 trans you are equal in gearing to a MN6 C5 with a 3.90 (see chart for comparison).

I don't have first hand experience with the M12, so can't give firsthand feedback on the topic of a gear change with that trans factored in.
i have a Z06 trans in my coupe for that specific reason. It was cheaper to do that over a rear end. I have not blown out a rear end yet and my tires dont break loose all the time like his. So hell maybe mine is the shitty one lol.
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Old May 9, 2022 | 06:15 PM
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Mustang dyno jetted? What exactly does that mean?

Did the seller say it made 440 ish on a Mustang dyno and that would calculate out to 501 on a DynoJet?
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Old May 9, 2022 | 06:47 PM
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Originally Posted by Johnny Hardcore
Chatter could be the clutch itself. Could also be the clutch isn't broken in yet. What clutch is in it and how many miles on it, any clue?
Not sure. It's going into the shop tomorrow. The previous owner has been hard to get a hold of. Any suggestions on a new clutch for a C5 at 500 HP, and more to come?
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Old May 9, 2022 | 06:56 PM
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Originally Posted by zztopo
Not sure. It's going into the shop tomorrow. The previous owner has been hard to get a hold of. Any suggestions on a new clutch for a C5 at 500 HP, and more to come?
lots of great choices... depends on use and what you want. I have a Tony Mamo'd RPS carbon twin, it is butter and shifts @ high rpm like a breeze, but $$$. 700ft lb rated iirc.
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Old May 9, 2022 | 06:58 PM
  #53  
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Originally Posted by acroy
lots of great choices... depends on use and what you want. I have a Tony Mamo'd RPS carbon twin, it is butter and shifts @ high rpm like a breeze, but $$$. 700ft lb rated iirc.
Thank you!
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Old May 9, 2022 | 07:19 PM
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Originally Posted by dskinsler83
i have a Z06 trans in my coupe for that specific reason. It was cheaper to do that over a rear end. I have not blown out a rear end yet and my tires dont break loose all the time like his. So hell maybe mine is the shitty one lol.
Nah, a good tire and not treating your throttle like an on/off switch likely has some to do with it.
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Old May 9, 2022 | 07:46 PM
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Originally Posted by acroy
lots of great choices... depends on use and what you want. I have a Tony Mamo'd RPS carbon twin, it is butter and shifts @ high rpm like a breeze, but $$$. 700ft lb rated iirc.
lots of choices and all dependent on what you are looking for. As well as how your car is setup and how you drive it. Only you'll know where your sweet spot is and what you need from a clutch.

RPS makes a great clutch. As do others like McLeod, Mantic, Monster etc.. Heck, Centerforce makes a good clutch for the C5 depending on power output.

I have a Centerforce DF (rated at 622lbs) in my car that has held up flawlessly over the last 12 years with 1/4 mile passes and 30k+ miles. I went with the Centerforce when my car was NA 428rwhp/398rwtq.

My car has outgrown the Centerforce, but at this moment, it's still holding up with the FI setup. But that's only been under street driving conditions the last year and no really hard launches. I plan to go RPS or Mantic when the time comes around again.






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Old May 9, 2022 | 07:52 PM
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Old May 9, 2022 | 08:44 PM
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Originally Posted by zztopo
Not sure. It's going into the shop tomorrow. The previous owner has been hard to get a hold of. Any suggestions on a new clutch for a C5 at 500 HP, and more to come?
dual disk is very worth it at that level to hold the HP and still have nice streetable manners. I have the McLeod RXT but I would do a Mantic dual if the budget allows.
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Old May 10, 2022 | 01:51 AM
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Originally Posted by Johnny Hardcore
With that cam...if your car isn't hunting and surging at low speed parking lot type driving the gears could be bigger. With a Z06 M12 trans you are equal in gearing to a MN6 C5 with a 3.90 (see chart for comparison).

I don't have first hand experience with the M12, so can't give firsthand feedback on the topic of a gear change with that trans factored in.
-
She hunts and surges big time. Rolling into 1st gear. After that, it's pure butter.
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Old Jul 10, 2022 | 05:15 PM
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