05-20-2013, 02:17 AM | #197 | |
Can't stop ***ifying
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Rotofab, grinding rear diff sound forever, dealer replaced supercharger - now i have a rattle when starting from a stop, ordered 2.35 lingenfelter pulley, hp tuner, belt, 100mm idler pulley, tr7IX spark plugs, wideband kit, long tubes with no cats...hoping for 650hp. dyno with rotofab = 518hp |
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05-20-2013, 03:52 AM | #198 | |
Drives: Charger/TL1000R/Cobalt/ZL1 Join Date: Sep 2011
Location: Ontario,Canada
Posts: 1,207
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05-20-2013, 06:26 AM | #199 |
Drives: 2013 Camaro 2SS/RS BRM LS3 Join Date: Jan 2013
Location: Hawaii
Posts: 1,174
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05-20-2013, 08:35 AM | #200 | |
Drives: 2SS/RS - Black - GFX Join Date: Nov 2008
Location: B'ham, Alabama
Posts: 2,458
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http://www.camaro5.com/forums/showthread.php?t=175148
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Ordered: 10-13-08
Built: 3-30-09 (#1691) Recieved: 6-12-09 Blacked out, Cammed (Lunati Voodoo 233/245, .578/.598 @114°, +4°), ARH LTs, VR OTR CAI, Cutouts, and lots of other fun mods. |
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05-20-2013, 08:48 AM | #201 | ||
Dances With Mustangs
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Blue Angel is here!! 1SS/RS LS3 M6 IBM |
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05-20-2013, 09:30 AM | #202 |
Drives: 2018 2SS Join Date: Jun 2012
Location: Ohio
Posts: 294
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Although I have never run the Trofeos, I do have extensive experience with DOT competition tires. Over the years I’ve run Hoosiers, Michelin MPSC, BFG R1, Toyo RA1, etc. Around a track like Mid-Ohio all of these tires beat the best street tires by at least 3 seconds. The new Hoosier R6s and BFG g-Force R1s are probably 4 and maybe even 5 seconds faster.
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05-20-2013, 09:47 AM | #203 |
Can't stop ***ifying
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Careful Jim, slow poke doc might take offense to your valid opinion. But in case it flew way over his head, as most things apparently do, i must emphasize that you are saying that race tires have enabled your to reduce lap times by whole seconds. I have had that same experience. Alas, we are the minority in this thread. Luckily, you do not drive a ZL1, because that would automatically diminish your credibility here. BTW, thank you for your information. I really didn't know the lap time reduction would be that significant.
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05-20-2013, 09:53 AM | #204 | |
Can't stop ***ifying
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I suppose you think that jim , above, doesn't have any actual points either? Id like to see your counter to his experience, UFO's?
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Rotofab, grinding rear diff sound forever, dealer replaced supercharger - now i have a rattle when starting from a stop, ordered 2.35 lingenfelter pulley, hp tuner, belt, 100mm idler pulley, tr7IX spark plugs, wideband kit, long tubes with no cats...hoping for 650hp. dyno with rotofab = 518hp |
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05-20-2013, 10:30 AM | #205 | |
Too Many Great Choices
Drives: Grand Sport/Z07 Join Date: Jun 2009
Location: A Mountain Road
Posts: 7,454
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Yes the Trofeos would improve most any cars track time. However that's not what the ZL1 is "only" about, its a street car that can be a DD "first" and thats the way it was designed to be. As for the Z/28 it is primarily a track car that allows you to legally drive it to the track. As for COG we know the Z/28 suspension has been lowered. The 19" wheels and tires have also lowered it. It does not have a S/C so it's less top heavy. All this adds up to a lower COG. Yes again, the LSA is more torquey its a S/C'd engine. It's built for off the line and all around performance. You having owned one know the LS7 is built to track with its higher rpm's and mid range torque. So to end, yes the ZL1 doing a hero lap would be faster than it is now (wearing GY's) with the Z/28's tires around a track. But then again your concerned about the 3 second comment which was an "early" accomplishment...where is the Z/28 at now?
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05-20-2013, 10:34 AM | #206 | ||
Dances With Mustangs
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You sound experienced and I appreciate your contribution to the thread.
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Blue Angel is here!! 1SS/RS LS3 M6 IBM |
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05-20-2013, 11:13 AM | #207 |
2015 SS 6M
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I'm sure tires are going to be the least of upgrades differentiating the 2012 - up ZL1 and the 2014 Z/28. Here are a few to consider when debating how much any one change might make a significant difference in the targeted performance disparity between these two versions.
*Z/28 LS7 figures based on currently published production LS7 specifications. HP/TQ ZL1: 580 bhp @6000 rpm / 556 lb-ft @4200 rpm Z/28: *505 bhp @6300 rpm / 470 lb-ft @4800 rpm Advantage: ZL1 MAX RPM ZL1: 6200RPM Z/28: *7100RPM Advantage: Z/28 Brakes ZL1: Brembo Calipers - 6 Piston @Front, 4 piston @Rear with Brembo 2-Piece Steel Rotors. Z/28: Brembo Calipers - 6 Piston @Front, 4 piston @Rear with Brembo Carbon Ceramic Rotors. Advantage Z/28 Tires ZL1: Goodyear Eagle F1 Supercar:G2 285/35R20 @Front, 305/35R20 @Rear Z/28: Pirelli PZero Trofeo R 305/30ZR19 @Front, P305/30ZR19 @Rear Let's recall that both the 2013 GT500 and 2012 ZL1 wore Goodyear Eagle F1 Supercar:G2 in the Car&Driver Lightning Lap comparison and HP advantage alone was not enough to close the gap, around the track. I realize there are many other differences besides tires, but that's the point. Advantage Z/28 Aerodynamics/Lift ZL1: 65 Net lbs of downforce at 150 MPH Z/28: Al Oppenheiser "at some point when we tell you how much, it will knock your socks off how much down force this car makes.” Advantage Z/28 Suspension ZL1: 3rd Generation Magnetoreheologically adaptive suspension system Z/28: Dynamic Suspension Spool Valve (DSSV) dampening system (Anecdotally, also used on the Aston Martin One-77 "Supercar") Advantage Z/28 Weight ZL1: 4120 Z/28: @ < 3800 Advantage Z/28 Chassis Dynamics ZL1: Great Z/28: Even Better Advantage Z/28
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Last edited by silverds; 05-20-2013 at 11:37 AM. |
05-20-2013, 11:42 AM | #208 | |
Drives: BAC Mono Join Date: Apr 2013
Location: Reno
Posts: 869
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Variety of coolers to keep the trans/diff/PS from committing suicide on hot track days. Linear power delivery NA powerband, more controllable on track. Seats that hold you in place and act as the first line safety system. Stiffer bushings/mountings for better control and feel. Advantage Z/28 It goes on and on... |
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05-20-2013, 11:59 AM | #209 |
Drives: 2015 Z/28 | 2017 Viper ACR Extreme Join Date: Aug 2011
Location: Brownsburg
Posts: 1,009
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The last few posts shed some real light on this argument. Thanks for taking the time to outline everything.
Let's not forget (these have already been mentioned): Weight Distribution Advantage Z/28 Engine Architecture (Naturally Aspirated vs. Supercharged) Advantage Z/28 Center of Gravity (COG) Advantage Z/28 I'm sure there are more. Not to discredit the ZL1 but these are things that will help the Z/28 on the track. ZL1 is still a great car.
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05-20-2013, 12:16 PM | #210 |
Drives: 2006 Silverado SS, 2009 G8 GT Join Date: Aug 2008
Location: PNW
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