When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Ran the 1/8 last night, all runs where in the mid to low 70's air temp. Stock (NO Mods) with 265/40R18 M/T DR's. Launched from idea in sport with T/C disabled. All we have here is 91 Octane gas. This is my best to date, MPH went up by 1 mph. 1.662 60' @ 7.462 & 96.54 MPH. My car has 7600 miles now and is really coming alive. Base A8 NPP.
Well done, very impressive. A great way to test the power of your Vette against your skills.
Thanks, I don't understand why Chevrolet Shows that the base is a Dog, something like .4 slower 0-60 and about the same slower in the 1/4. This is total untruth.
Thanks, I don't understand why Chevrolet Shows that the base is a Dog, something like .4 slower 0-60 and about the same slower in the 1/4. This is total untruth.
Thanks, I don't understand why Chevrolet Shows that the base is a Dog, something like .4 slower 0-60 and about the same slower in the 1/4. This is total untruth.
Because they want to sell the more expensive cars.
The slight gearing difference will be made up by the torque converter off the line and the base car is lighter (no e-diff, extra coolers, dry sump, smaller rotors) so...
The drag radials are all thats needed with an auto car
Because they want to sell the more expensive cars.
The slight gearing difference will be made up by the torque converter off the line and the base car is lighter (no e-diff, extra coolers, dry sump, smaller rotors) so...
The drag radials are all thats needed with an auto car
Great times, congrats.
The base is about 100lbs +/-, I could of ordered a Z51 but did not want the e-diff or dry sump, the base breaks are plenty huge, the 2.73's may make it break loose easier and don't think are needed with the 1st gear this A8 has. I liked the idea of the factory NPP so I ordered that also.
The base is about 100lbs +/-, I could of ordered a Z51 but did not want the e-diff or dry sump, the base breaks are plenty huge, the 2.73's may make it break loose easier and don't think are needed with the 1st gear this A8 has. I liked the idea of the factory NPP so I ordered that also.
The only real 1/4 mile advantage a Z51 has is the tires, the Z51 rears grip a lot better than the non-z51 tires. They are almost like drag radials when hot and new. I know the non-z51 tires are supposed to be the same compound but after owned them both the z51 tires hook way better. As long as its warm out
IMO the quickest 1/4 mile C7 (non Z06 of course) should be a 1LT auto with drag radials. Stock tires a Z51 will probably hook better though, so I guess GM isnt lying
The only real 1/4 mile advantage a Z51 has is the tires, the Z51 rears grip a lot better than the non-z51 tires. They are almost like drag radials when hot and new. I know the non-z51 tires are supposed to be the same compound but after owned them both the z51 tires hook way better. As long as its warm out
IMO the quickest 1/4 mile C7 (non Z06 of course) should be a 1LT auto with drag radials. Stock tires a Z51 will probably hook better though, so I guess GM isnt lying
When I ordered mine with only 3 options, A8, NPP, ZF1. Ordered with ZF1 because of the Z51 tires and wheels. I had the DR's sitting in my garage form the 09 Z51 I had, did not want to have the OEM tires spent. The Z51 tires are very little wider.
Last edited by C2367; 09-23-2016 at 10:03 PM.
Reason: error
When I ordered mine with only 3 options, A8, NPP, ZF1. Ordered with ZF1 because of the Z51 tires and wheels. I had the DR's sitting in my garage form the 09 Z51 I had, did not want to have the OEM tires spent. The Z51 tires are very little wider.
I hear ya. Although the Z51 tires are pretty good a set of decent 18' DRs will still outhook them on a marginal track. When I hit a dragstrip and its busy I want to make every pass count.
Plus I dont blame you for not wanting to burn up the OE tires, they arent cheap
Thanks, I don't understand why Chevrolet Shows that the base is a Dog, something like .4 slower 0-60 and about the same slower in the 1/4. This is total untruth.
Originally Posted by kp
Because they want to sell the more expensive cars.
The slight gearing difference will be made up by the torque converter off the line and the base car is lighter (no e-diff, extra coolers, dry sump, smaller rotors) so...
The drag radials are all thats needed with an auto car
Great times, congrats.
You guys just sound like base model guys who want to tell themselves they don't need the pricier model.
The Z51 has forged wheels. Do you understand what unsprung weight does to performance? Forged wheels ALONE are worth paying for the Z51 package. Better gearing is also not to be discounted. Chevy isn't listing the Z51 with better numbers to "sell more pricey models" that's silly. The Z51 package doesn't cost that much extra to begin with, and is a steal for what you get in terms of equipment.
In my opinion (I know, everyone's got one), all corvettes should come with the Z51 as standard. I see the non-Z51 'base' model as fit for old guys who just want a badge and want to tell everyone they own a vette. Usually, it's the same guys who start the 100s of threads about how competition seats are hurting their butts, or the suspension is too harsh. i.e., guys who haven't been truly exposed to what the modern European sportscar standard is, and want floaty old sub-par performance cars that characterized the American performance scene for decades.
I've got drag radials. They are not a night and day difference, and do not substitute for real skill in launching. All else equal, the drag radials get me a half second advantage over the stock Michelins, but with a lower trap speed. The corvette is a harder car to launch, requiring patience and skill - high HP/Tq combined with light weight always makes for hard launches. In comparison, my old AMG which was 600 lbs heavier, was much easier to launch.
Both my my '16 MRC and the OPs car with ZF1 have your precious Z51 forged wheels, plus the added bonus of no brake dust and rotors that dont rust so my 'old guy' badge doest fall off when I am bending over to wipe off the daily accumulated Z51 brake dust lol.
The gearing doesnt mean much with an auto off the line, off the line the torque converter will dictate the rpm and these have a fairly loose converter when its not locked. The Z51 rear gear ratio may help a tiny bit in a perfect traction situation but not much. But the A8 1st gear is pretty deep so I doubt it will help much real world.
No one is arguing the Z51 package isnt a good bargain, for a road racing car, because thats what its made for. Its heavier, which is slower in a drag race. Simple as that.
Personally I dont know why the Z51 even still exists in 2017 with the Grand sport, if you want a real road track worthy car how can you beat that for a couple grand more than a Z51 I'm sure the Z06 guys feel the same way you do, why tarnish the image of a corvette with a lousy 465hp.
FWIW I have launched everything from a 2500hp pro mod car to a 1000+hp stock suspension car on 8" wide tires. While I admit I have some skill building and tuning the cars I am not the greatest driver but still did pretty well at it, but launching a stock auto C7 with good traction doesnt take much skill once you figure it out. M7, well thats another story..
Originally Posted by xxaarraa
You guys just sound like base model guys who want to tell themselves they don't need the pricier model.
The Z51 has forged wheels. Do you understand what unsprung weight does to performance? Forged wheels ALONE are worth paying for the Z51 package. Better gearing is also not to be discounted. Chevy isn't listing the Z51 with better numbers to "sell more pricey models" that's silly. The Z51 package doesn't cost that much extra to begin with, and is a steal for what you get in terms of equipment.
In my opinion (I know, everyone's got one), all corvettes should come with the Z51 as standard. I see the non-Z51 'base' model as fit for old guys who just want a badge and want to tell everyone they own a vette. Usually, it's the same guys who start the 100s of threads about how competition seats are hurting their butts, or the suspension is too harsh. i.e., guys who haven't been truly exposed to what the modern European sportscar standard is, and want floaty old sub-par performance cars that characterized the American performance scene for decades.
I've got drag radials. They are not a night and day difference, and do not substitute for real skill in launching. All else equal, the drag radials get me a half second advantage over the stock Michelins, but with a lower trap speed. The corvette is a harder car to launch, requiring patience and skill - high HP/Tq combined with light weight always makes for hard launches. In comparison, my old AMG which was 600 lbs heavier, was much easier to launch.
You guys just sound like base model guys who want to tell themselves they don't need the pricier model.
The Z51 has forged wheels. Do you understand what unsprung weight does to performance? Forged wheels ALONE are worth paying for the Z51 package. Better gearing is also not to be discounted. Chevy isn't listing the Z51 with better numbers to "sell more pricey models" that's silly. The Z51 package doesn't cost that much extra to begin with, and is a steal for what you get in terms of equipment.
In my opinion (I know, everyone's got one), all corvettes should come with the Z51 as standard. I see the non-Z51 'base' model as fit for old guys who just want a badge and want to tell everyone they own a vette. Usually, it's the same guys who start the 100s of threads about how competition seats are hurting their butts, or the suspension is too harsh. i.e., guys who haven't been truly exposed to what the modern European sportscar standard is, and want floaty old sub-par performance cars that characterized the American performance scene for decades.
I've got drag radials. They are not a night and day difference, and do not substitute for real skill in launching. All else equal, the drag radials get me a half second advantage over the stock Michelins, but with a lower trap speed. The corvette is a harder car to launch, requiring patience and skill - high HP/Tq combined with light weight always makes for hard launches. In comparison, my old AMG which was 600 lbs heavier, was much easier to launch.
I agree with most of what you said with the exception of "OLD GUYS" Some of us OLD GUYS can drive rings around young whippersnappers....and they get the base Vette because that is what they wanted. Me....I got the Z51...
...
The Z51 has forged wheels. Do you understand what unsprung weight does to performance? Forged wheels ALONE are worth paying for the Z51 package....
I have asked here and googled this but can't find anything authoritative to substantiate this claim. Either that the Z51 has true forged wheels or that the base wheels aren't forged. Nothing on Chevy's website indicates either way. Closest I can find is this brief discussion...
Do you have a cite for this? I'm genuinely curious.
BTW I do agree with your assertion that lighter weight wheels have a dramatic impact drag racing. I'm curious what the actual weights of base wheels vs Z51 wheels are.
As I said I could of bought a Z51 when I ordered it but I only like to drag race, I had no need for the Dry sump, e-diff, larger front breaks and the extra weight. The extra cost to me would of been minor. My 09 C6 was a Z51 and was only a 1/2 of a 10th quicker then my friends 08 C6 Base A6. With this new A8 launches great with the 2.41's. If I was to do it again I would still order the base A8, NPP.
Thanks, yes I know 11.6's on a ok day and maybe 11.5's on a great day. This car has really started to wake up, it is strange because of all the negative things I have read about the reduction in power due to the intake valves coking.
I just made a comparison with Brent's time slip......I would say if you had followed through a 1/4 mile course with that 1/8 mile times 11.40'sBrent's A8 did 11.37 with similar 1/8 mile times, however that was without drag radials.
Very nice runs from a stock no mod car. Plus you should be getting a better run in the car from the TIMES showing on the time slip 1st run after 4:00 2nd run after 5:00 then the last run after 6:00 pm. Cooler temp and lower temp on the track will help a ton in any set up.
09-23-2016, 01:39 PM
Fantastic 60' time Base A8 drags time slip
Well done, very impressive. A great way to test the power of your Vette against your skills.
The base is about 100lbs +/-, I could of ordered a Z51 but did not want the e-diff or dry sump, the base breaks are plenty huge, the 2.73's may make it break loose easier and don't think are needed with the 1st gear this A8 has. I liked the idea of the factory NPP so I ordered that also.
