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Old 04-11-2012, 10:23 AM   #29
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Originally Posted by Graham Behan View Post
That would be called detonation, on that run. Nothing to do with a break in period, just us exploring the performance of the vehicles at different temperatures and heat soak periods to see the effects of intercooler system efficiencies when heat soaked etc. we are just establishing where the limitations may be before we explore extreme power levels. its all about understanding what the production set up is capable of before pushing it to where we wish to be with these cars. First notes are the intercooler efficiency differences between this set up and the CTSV, inlet depression, obviously exhaust system backpressure, etc.

Graham.
An example of why I leave this stuff to the experts, makes sense.
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Old 04-11-2012, 03:23 PM   #30
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Any results from anyone on a dynojet yet?
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Old 04-11-2012, 03:24 PM   #31
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Cool video MEAN!

The paint match on the Red car is horrible! From the plastic compared to the metal... dang.
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Old 04-11-2012, 03:34 PM   #32
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very nice,strong right out of the box,i was expecting #'s to be in the high 490'ish,but over 500 i think is pretty darn impressive,man,the more i see the more i want!i just got off Chevy's site building my own,$56,845..which is about 10-15g's too deep for my pocket,hope everyone that gets one enjoy's the hell out of it,i would!
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Old 04-11-2012, 03:37 PM   #33
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oh,and rwhp is about 63 more than i have with my "ss" with mild g.m. cam,tune,cai,kooks l/tubes with 3"exaust w/hi flo cats,
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Old 04-11-2012, 03:47 PM   #34
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Double ZL1...it's so VIVID! WOOOOWWWWWW!!!
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Old 04-11-2012, 03:54 PM   #35
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I just noticed the ZL1 has readable "skinnier" tach needles....
Is this the same for newer years? I have the 2010 fat needle that is useless.
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Old 04-11-2012, 03:57 PM   #36
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Old 04-11-2012, 03:59 PM   #37
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Were both of those manuals?
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Old 04-11-2012, 04:06 PM   #38
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Quote:
Originally Posted by eggydoo View Post
I just noticed the ZL1 has readable "skinnier" tach needles....
Is this the same for newer years? I have the 2010 fat needle that is useless.
Started with the 2012 Camaro's
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Old 04-11-2012, 04:19 PM   #39
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Good numbers and right in line with what I would have expected on a Mustang dyno. My neighbors 2012 GT500 w/PP made 500rwhp/480rwtq on a Mustang dyno. Given the extra CID of the 6.2 versus the 5.4, the greater torque generated by the larger motor shows.

I think in a drag race, the 2011-2012 GT500 and the ZL1 are going to be a drivers race with the edge going to the ZL1 given equal drivers.
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Old 04-11-2012, 04:32 PM   #40
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At 518RWHP if that engine is indeed making 580BHP at the crank then that would give us an 11% drive line loss.

The reason that the V6 Mustang and V6 Camaro can get the fuel economy numbers that they get is due to such low drive line losses. Consider that the V-6 Mustang is rated at 305BHP and gets a best 31MPG and the Camaro V-6 at 323BHP gets a best 30MPG. Consider that the Honda Accord V6 Coupe wwith 271BHP gets a best 29MPG highway, thats all 3 with automatic transmissions and consider that the Honda is 3,400 pounds compared to 3,450 pounds for the Mustang and 3,750 pounds for the Camaro. When you equip all 3 vehicles with manual transmissions the Honda does even worse as it has a rating of 26MPH highway. Compare that to 29MPG for the Mustang and 28MPG for the Camaro.

So what I am saying is the reduction in drive line loss has given the RWD platform new life as they are now capable of achieving fuel economy numbers that are competitive to their FWD counter parts. The fact that RWD vehicles use to have a driveline loss in the 20-25% range and now are in the 10-15% range is impressive. That some models in the past had a 25% drive line loss and now have a 10% drive line loss doesn't just mean better fuel economy. This also means better performance all around, consider that if it takes 300RWHP to get a 3,000 pound vehicle to 60MPH in 4.5 seconds. At a 25% drive line loss it takes 400BHP to achieve 300RWHP, this means a engine that not only consumes more fuel but a engine that is bigger and heavier all things equal. Also the transmission has to be beefier to handle 400BHP going into it, so the the drive line gains weight. So in order to keep the 3,000 pound vehicle weight you need to use lighter (more expensive) materials. At 10% drive line loss you only need 375BHP to do the same thing, though the difference of only 25BHP is a small difference. This difference becomes more pronounced as the power levels go up. When you are looking at 700BHP range at 25% loss you get 525RWHP and at 10% loss you get 630RWHP a difference of more then 100RWHP.
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Old 04-11-2012, 04:35 PM   #41
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Did anybody notice that it doesn't do the full gauge sweep? Specific to 2012 or ZL1's?
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Old 04-11-2012, 04:47 PM   #42
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