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Old 04-01-2013, 01:15 PM   #43
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Originally Posted by daveagogo1 View Post
Last time i checked my SS doesn't have these either yet is somehow manages to get down the 1320 over and over just fine.

Z/28 with 7000rpm redline minus the same clutch packs and 19" wheels will walk the ZL1 with a driver.
Your ss will also not be warrantied if you blow a piston or drop a drive shaft after a hard launch at the track
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Old 04-01-2013, 04:50 PM   #44
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I am going to say 11.9 to 12.0. 300lbs is significant. Look at 2012 GT500 vs 2012 Boss 302. 550hp vs 450hp similar times.

the car will have a bit friendly torque crurve and revs high.
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Old 04-01-2013, 05:37 PM   #45
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Questions I have:

Will the Z/28 incorporate the ZL1 "no lift shift" algorithms used in the ZL1 drag setup?

Will the Z/28 have 5 PTM Modes like the ZL1? Remember Mode 5 was for "prepped drag strip tracks"....

We have seen something saying the axles are not as strong as the ZL1's and not intended for drag racing. Is this from a legit source? As we remember, GM touted in a video that they launched the ZL1 with a clutch dump 1,000 times in a row with no breakage.

Does the Z/28 have the same rear axle housing as the ZL1 (which is 200 pounds heavier than an SS diff)?

I have no doubts the LS7 is very capable of 1/4 mile runs equal to a ZL1. It sounds like it is being denied that glory from a corporate positioning.

That brings me to another question, what might be the differences in the clutch itself from a ZL1?

We shall learn as we go. It does look to me that both are capable of sub 12 times with small tweaks but it also appears the availability of a LS7 Z/28 will be limited to a pretty short time span before the next Gens are exposed.

And with the next Gens being somewhere at a guess of about 3300-3400 lbs (not much more than current Vette weight), the next Gen 6 will undoubtedly be formidable and possibly outlandish never heard of factory missiles. I believe GM is using the next two years (and have been using the last two years) to develop a MONSTER Gen 6 that will make current ZL1 and Gen 5 Z/28 owners think about trading in! Hell, the molds are probably being made already! While all of us have our attention on the "refresh".... LOL
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Old 04-01-2013, 06:34 PM   #46
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Originally Posted by *007 View Post
Questions I have:

I have no doubts the LS7 is very capable of 1/4 mile runs equal to a ZL1. It sounds like it is being denied that glory from a corporate positioning.


We shall learn as we go. It does look to me that both are capable of sub 12 times with small tweaks but it also appears the availability of a LS7 Z/28 will be limited to a pretty short time span before the next Gens are exposed.
I agree with you, but I think the getting into the 11's will take more than a few tweaks. GM has already stated its a track car, they never mentioned drag racing with it.

I know weight is a great factor as my old 45th LS3 M6 vert felt quite a bit slower than my friends LS3 M6 coupe as there is a few hundred pound difference. The ZL1 feels noticeably quicker than the SS coupe, but its got 150 more horsepower and 3:73's opposed to 3:45's. Mind you the SS has a deeper 1st and 2nd (3.01 and 2.07) compared to the ZL1's (2.66 and 1.78).

The Z/28 will have about 75hp less HP and ftlbs of torque than the ZL1, but its a little lighter. I'm guessing the Z/28 will not have the same rear end as the ZL1 as weight was such an issue. A drag car needs a heavier diff than a track car as a drag car has to deal with the enormous torque at launch.
It will be a good race

Its anybody's guess but I'll bet the ZL1 takes the Z in the 1/4

Anyway you swing it, both cars as awesome cars, they are just designed for different purposes.
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Old 04-02-2013, 06:08 PM   #47
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I have seen bone stock Z06s run 10.70-10.80@128 at MIR in really good air...amazing because just 505hp vs LS9 powered ZR1 cars run 10.60@132 stock with drag radials. The LS7 is amazing and the gearing in the transmission of the ZR1 hurts the 1/4 mile performance. Lets say the Z28 is 800lbs heavier than the Z06 so we can add .8/8mph approximately to the best Z06 stock runs with perfect traction in great air. That extrapolates to 11.50-11.60@120 with very crude fudge factors assuming similar gearing to the Z06.
How many stock Z06s run 10.70-10.80s....not alot. On average they are 11.70-11.80 cars with a tire and an good driver. Regardless...I'm not sure why guys say the Z28 is down 75-80 hp, and why GM only rates it at 500hp. Wouldn't ya think with a factory CAI and CNC'd heads it would be closer to 530-540hp?
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Old 04-02-2013, 06:17 PM   #48
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Skipped everyones posts, but whatever.

More weight + more power = ZL1 win
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Old 04-03-2013, 08:19 PM   #49
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Originally Posted by LINMUP View Post
How many stock Z06s run 10.70-10.80s....not alot. On average they are 11.70-11.80 cars with a tire and an good driver. Regardless...I'm not sure why guys say the Z28 is down 75-80 hp, and why GM only rates it at 500hp. Wouldn't ya think with a factory CAI and CNC'd heads it would be closer to 530-540hp?
I've seen 11.3-11.7 out of a bunch bone stock. And some run in the 12's. Lol. Seen a ZR1 run multiple 12's@122-126.

We talked shit cs he started shit, challenged me and another 5.0 to run. This was his run right after. We both ran same lane right after. I ran a 10.6 letting out and buddy ran a 10.9 n/a. He left soon we ran.





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Old 04-03-2013, 09:27 PM   #50
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Some people might get 11.90's on a good run. Its still a 3800lb + car with 500 hp.
GT500 weighs the same with 662hp and 638 lb/ft torque and most run 11.70's stock But it still comes down to power to weight...so 11.3's-11.5's stock arent gonna happen unless GM's idea of 500+ hp is 550+ at the wheels
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