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1/4 mile calculations

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Old Sep 11, 2008 | 05:28 PM
  #91  
rasputin's Avatar
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the math is wrong that is posted above......^^^^

370rwhp/.88=421

380rwhp/.88=431

390rwhp/.88=433

100-12% loss=88 (if you are wondering where I got .88 from).

M6 LS3's see 390rwhp as the median @ 14% loss is...

390/.86=453 crank hp, which makes sense because its underrated.
Old Sep 11, 2008 | 11:11 PM
  #92  
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Originally Posted by rasputin
10% is hugely efficient and not realistic

14-16% for the manual, 18-20% for the auto.

Nope.

The GT500 an SAE certified 500hp car dynos ~440rwhp.

500(.88) = 440

The C6 is SAE certified at 436 with Z06 exhaust option. They dyno ~390rwhp.

436(.9) = 392

12% is the number most people agree on for loss on a TR6060 with an 8.8 rear axle. And the vettes transaxle looks to be even better.
Old Sep 11, 2008 | 11:14 PM
  #93  
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Originally Posted by rasputin
the math is wrong that is posted above......^^^^

370rwhp/.88=421

380rwhp/.88=431

390rwhp/.88=433

100-12% loss=88 (if you are wondering where I got .88 from).

M6 LS3's see 390rwhp as the median @ 14% loss is...

390/.86=453 crank hp, which makes sense because its underrated.

Except they're not underrated.

The 422hp Camaro SS will dyno out at 370rwhp.

Last edited by BigBlueCruiser; Sep 11, 2008 at 11:16 PM.
Old Sep 12, 2008 | 02:24 AM
  #94  
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Originally Posted by rasputin
the math is wrong that is posted above......^^^^

370rwhp/.88=421

380rwhp/.88=431

390rwhp/.88=433

100-12% loss=88 (if you are wondering where I got .88 from).

M6 LS3's see 390rwhp as the median @ 14% loss is...

390/.86=453 crank hp, which makes sense because its underrated.
underrated doesn't exist, so long as the engine is SAE certified. with the certification process, ALL engines must be +-1% of the rated power to have the privilage of being "SAE Certified". It's not that complicatated, go to SAE's main website. go check out the Corvette forums, they have written so much more about this discussion.

rest assured, "underrated" doesn't exist anymore*. (*Except for non-SAE certified engines. but then again, they can be overrated as well, such as the much speculated LS2 in the vette forums.)

Last edited by TrickStang37; Sep 12, 2008 at 02:26 AM.
Old Sep 12, 2008 | 02:31 AM
  #95  
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btw, i believe most manual's are at about 10-12% while most MODERN auto's are at 13-16%.
Old Sep 12, 2008 | 04:56 AM
  #96  
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is anybody else ridiculously dissapointed in the "estimated performance" of the new camaro... I mean, these 0-60 and 1/4 times being said for the new camaro could easily have been done by a 10 year old ls1.. I shure as hell hope its underrated or this is a huge waste.

new camaro= more expensive old ls1?? haha
Old Sep 12, 2008 | 10:01 PM
  #97  
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Originally Posted by BigBlueCruiser
Nope.

The GT500 an SAE certified 500hp car dynos ~440rwhp.

500(.88) = 440

The C6 is SAE certified at 436 with Z06 exhaust option. They dyno ~390rwhp.

436(.9) = 392

12% is the number most people agree on for loss on a TR6060 with an 8.8 rear axle. And the vettes transaxle looks to be even better.
if no more cars are underrated, then there are weapons of mass destruction in Iraq

Last edited by rasputin; Sep 12, 2008 at 10:04 PM.
Old Sep 12, 2008 | 11:25 PM
  #98  
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Originally Posted by OrbitalChris
is anybody else ridiculously dissapointed in the "estimated performance" of the new camaro... I mean, these 0-60 and 1/4 times being said for the new camaro could easily have been done by a 10 year old ls1.. I shure as hell hope its underrated or this is a huge waste.

new camaro= more expensive old ls1?? haha
the performance times posted might be "underrated" since SAE has nothing to do with that, but the power will NOT be "underrated".
Old Sep 12, 2008 | 11:30 PM
  #99  
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Originally Posted by rasputin
if no more cars are underrated, then there are weapons of mass destruction in Iraq
oh, it's possible cars are underrated. Nice point. The Hemi engines and the Ford Modulars come to mind since they are not SAE Certified. Just nothing coming from GM will be underrated because they have made a commitment to SAE Certify EVERY new engine they come out with, starting with the LS7 a while back.


Don't be lazy, look it up for yourself.
Old Sep 14, 2008 | 12:46 PM
  #100  
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My benchracing input....the 2010 SS will be 2-3 tenths quicker than the 05/06 GTO, thus one of the better mags (such as GMHTP) will likely run high 12s with their testing, while the mainstream mags (C&D, R&T, etc) will likely be in the low 13s, perhaps a 12.9 from one of them.

A good "shoe" at Atco, E-town, Cecil, or MIR in cold weather and a well-prepped racing surface will likely get em to run in the mid 12s.

All in all....about on par with an 03/04 Cobra, IMHO.
Old Sep 15, 2008 | 08:30 AM
  #101  
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if my bolt on, +ls6 intake, and hypertech programmed camaro ran a 12.5002 at 110.9 then we will def see 12's for a good driver. the avg driver will se low to mid 13's.
Old Sep 15, 2008 | 09:05 AM
  #102  
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you guys are missing the point.. it weighs THE SAME as a GTO.. it has only 22 more HP...

what times did the GTO pulled with 22 less hp than the ls3? I know the engine has a lot of modding potential... but.. My guess is we will see low 13s @ 110mph at most.

Speed in the 1/4 for me is king.
Old Sep 15, 2008 | 09:21 AM
  #103  
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Originally Posted by The Highlander
Speed in the 1/4 for me is king.
speed is not king. ET is king. speed it used to compensate for bad driving. if you can go faster from point A to point B with out increasing speed you're more effiecent.

Although it's still nice to have the speed.

oh btw I've seen a time slip for a stock ls2 GTO that ran a 12.92. . .for what it's worth

Last edited by boxmonkeyracing; Sep 15, 2008 at 12:49 PM.
Old Sep 15, 2008 | 09:46 AM
  #104  
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So the Vettes only lose 8% through a beefy T56 RWD setup?

Wow, that's on par with the amazing minimal loss the Ford GT bragged about.

The LS3 SS is rated at 416, I imagine they will dyno 5-10RWHP less if at all then the 08 C6's.

So it's about 150 lbs heavier then the GTO with about 40 more RWHP, there is no doubt in my mind it will outrun the LS2 Goats.

Can't wait to bump this thread to tell you how wrong most of you are.
Old Sep 15, 2008 | 05:26 PM
  #105  
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Originally Posted by 93Phoenix
So the Vettes only lose 8% through a beefy T56 RWD setup?

Wow, that's on par with the amazing minimal loss the Ford GT bragged about.

The LS3 SS is rated at 416, I imagine they will dyno 5-10RWHP less if at all then the 08 C6's.

So it's about 150 lbs heavier then the GTO with about 40 more RWHP, there is no doubt in my mind it will outrun the LS2 Goats.

Can't wait to bump this thread to tell you how wrong most of you are.
the vette loses ~11%.

LS3 is said to be rated 422 hp, so yes it will dyno less than an LS3 C6. How much, who really knows. I would venture to say ~12% for the manuals. The G8 loses more to the ground (auto vs. auto) than the vette, so if they had similar losses, the auto may lose ~16-17% (361hp stock / ~300rwhp for the G8, 436 hp stock/ ~370rwhp for the C6). We'll have to wait and see. Either way, the camaro will make less.

what they are rated at is what they will make before drivetrain losses, there's no way around that. The LS3 will not be the exactly the same (exhaust + intake) in a vette compared to a camaro.


and the difference will most likely be ~25-30 rwhp compared to a GTO, and MAYBE ~5-10rwhp for the auto.

Last edited by TrickStang37; Sep 15, 2008 at 05:30 PM.



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