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1/4 mile estimates/guesses?

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  • 1/4 mile estimates/guesses?

    Wondering what you guys think the 1/4 mile time on this car will be....completely stock. I know the 0-60 is impressive but what do you think happens after that? 60-100 and so on....Will it continue to light up the road or fall off?

    I don't think you can really make up for the lack of Hp compared to a C7 Z06 since the weight wont be drastically lighter, so despite a similar 0-60, I'm just curious what you think happens after that.

    I estimate an 11.1 or 11.2 at its best with all favorable factors at say Atco dragstrip. Maybe 124mph trap which would be an improvement over the last C7 Stingray.

    My previous C7 Z06 ran a 10.62 @131.5 at Atco on stock tires....Had a Halltech intake and Corsa Exhaust.

  • #2
    Guessing [email protected] MPH.

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    • #3
      I think you two are in the ballpark, but then again 99% of us never thought a sub 3.0 blast to 60 was remotely possible (I think I remember two forum members guessing under 3 seconds, with forum poll average being 3.35 seconds).

      So might we be shocked again with a 10.99?
      Lifetime, annual contributors, and 20+ year members of NCM.

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      • #4
        Has GM published a coefficient of drag Cd ??

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        • #5
          My guess is [email protected]

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          • #6
            Do you think the top speed will be limited? Even the stock engine should be good for 200mph

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            • #7
              I don't think the base C8 can hold up with the 650hp of the Z06 above 60mph, so I think a low to mid 11 should be possible.

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              • #8
                Originally posted by WillRockwell View Post
                Do you think the top speed will be limited? Even the stock engine should be good for 200mph
                I read 190mph somewhere ... Dont quote me on it though

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                • #9
                  Originally posted by Milliwatt Rob View Post
                  Has GM published a coefficient of drag Cd ??
                  No, it is in an upcoming press release along with tens of other pieces of info we all crave. As to when the press release is coming, only Godot knows.
                  Lifetime, annual contributors, and 20+ year members of NCM.

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                  • #10
                    I'm going to say 11.2 @ 125mph. That's a pretty big trap speed, but with the first six gear ratios close, and intended on performance, and the quickness of the DCT, I think it will get there.

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                    • #11
                      Performance data for Base and Z51 Stingray contained in 2016 Corvette brochure follows:

                      Base Stingray - 455HP - Manual (2.664 1st Gear Ratio) - 3.42 Axle Ratio
                      4.0 seconds - 0-60 MPH
                      No Quarter Mile data cited

                      Base Stingray - 455HP - A8 (4.56 1st Gear Ratio) - 2.41 Axle Ratio
                      4.0 seconds - 0-60 MPH
                      No Quarter Mile data cited

                      Z51 Stingray - 460HP - Manual (2.966 1st Gear Ratio) - 3.42 Axle Ratio
                      3.8 seconds - 0-60 MPH
                      12.0 seconds @ 119 MPH - Quarter Mile

                      Z51 Stingray - 460HP - A8 (4.56 1st Gear Ratio) - 2.73 Axle Ratio
                      3.7 seconds - 0-60 MPH
                      11.9 seconds @ 119 MPH - Quarter Mile

                      ---------------------------------------------------------------------------------------------------
                      1. If the C8 reaches 60Mph 0.8 seconds faster than the C7, then how much faster does the C8 reach 70MPH, 80MPH, 90MPH, 100MPH, 110MPH,

                      120MPH, 130MPH?????

                      2IFthe C7 does "11.9 seconds @ 119 MPH - Quarter Mile" , then Would the C8 [approximately] complete the quarter mile 0.8 sec faster than the

                      C7? If so then 11.9 - 0.8 =11.1 sec. IF? Since it was 0.8 secs ahead at 60MPH

                      3. The distance in feet the seperates two vehicles 0.8 in time at 60MPH is half the distance in feet that would separate two vehicles at 120MPH at 0.8 sec.

                      4. Therefore, for the C8 to be 0.8 seconds ahead of the C7 at 120MPH, then the C8 would need to double the distance of separation ahead of the C7. As that 60 MPH, what ever that distance was?


                      0.8 percent of 5280 = 42.24 feet . So at 120 MPH 84.48 feet separation.

                      Theory: Speculation ---- a. C8 hookup faster. b. C8 does 4/5 instant shifts to reach 120 therefore the C8 runs away from the C7 going to the quarter mile. C8 gains distance and speed advantage over the C7 with every gear shift. All else being equal.

                      C8 will do the quarter mile in 10.9

                      10.8?.

                      10.7 ??

                      106.??? Drag advantage and tires and suspension and undisclosed tweeks
                      Last edited by SheepDog; 08-04-2019, 12:46 PM.

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                      • #12
                        Originally posted by Milliwatt Rob View Post
                        Has GM published a coefficient of drag Cd ??
                        Yes, we'll need to factor in drag losses for out 1/4 mile time calculations...
                        Current Vettes:
                        '68 Lemans Blue 327/350 Convertible
                        '91 Turquoise Convertible w/hardtop
                        '14 Lime Rock Green 2LT Convertible, Black Top, Kalahari, 7-Speed, Performance Exhaust - Ordered on 4-1-2014, 2000 Status on 4-10-2014, TPW 5-12-2014, Built on 5-16-2014, Picked-up at dealership on 5-30-2014
                        "Delta t = 23"

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                        • #13
                          Originally posted by Jljordann922 View Post

                          I read 190mph somewhere ... Dont quote me on it though
                          Seems reasonable, and maybe a bit low, as stock C7 Stingrays run the Autobahn at ~186MPH.
                          Current Vettes:
                          '68 Lemans Blue 327/350 Convertible
                          '91 Turquoise Convertible w/hardtop
                          '14 Lime Rock Green 2LT Convertible, Black Top, Kalahari, 7-Speed, Performance Exhaust - Ordered on 4-1-2014, 2000 Status on 4-10-2014, TPW 5-12-2014, Built on 5-16-2014, Picked-up at dealership on 5-30-2014
                          "Delta t = 23"

                          Comment


                          • #14
                            Originally posted by SheepDog View Post
                            Performance data for Base and Z51 Stingray contained in 2016 Corvette brochure follows:

                            Base Stingray - 455HP - Manual (2.664 1st Gear Ratio) - 3.42 Axle Ratio
                            4.0 seconds - 0-60 MPH
                            No Quarter Mile data cited

                            Base Stingray - 455HP - A8 (4.56 1st Gear Ratio) - 2.41 Axle Ratio
                            4.0 seconds - 0-60 MPH
                            No Quarter Mile data cited

                            Z51 Stingray - 460HP - Manual (2.966 1st Gear Ratio) - 3.42 Axle Ratio
                            3.8 seconds - 0-60 MPH
                            12.0 seconds @ 119 MPH - Quarter Mile

                            Z51 Stingray - 460HP - A8 (4.56 1st Gear Ratio) - 2.73 Axle Ratio
                            3.7 seconds - 0-60 MPH
                            11.9 seconds @ 119 MPH - Quarter Mile

                            ---------------------------------------------------------------------------------------------------
                            1. If the C8 reaches 60Mph 0.8 seconds faster than the C7, then how much faster does the C8 reach 70MPH, 80MPH, 90MPH, 100MPH, 110MPH,

                            120MPH, 130MPH?????

                            2IFthe C7 does "11.9 seconds @ 119 MPH - Quarter Mile" , then Would the C8 [approximately] complete the quarter mile 0.8 sec faster than the

                            C7? If so then 11.9 - 0.8 =11.1 sec. IF? Since it was 0.8 secs ahead at 60MPH

                            3. The distance in feet the seperates two vehicles 0.8 in time at 60MPH is half the distance in feet that would separate two vehicles at 120MPH at 0.8 sec.

                            4. Therefore, for the C8 to be 0.8 seconds ahead of the C7 at 120MPH, then the C8 would need to double the distance of separation ahead of the C7. As that 60 MPH, what ever that distance was?


                            0.8 percent of 5280 = 42.24 feet . So at 120 MPH 48.48 feet separation.

                            Theory: Speculation ---- a. C8 hookup faster. b. C8 does 4/5 instant shifts to reach 120 therefore the C8 runs away from the C7 going to the quarter mile. C8 gains distance and speed advantage over the C7 with every gear shift. All else being equal.

                            C8 will do the quarter mile in 10.9

                            10.8?.

                            10.7 ??

                            106.??? Drag advantage and tires and suspension and undisclosed tweeks
                            I like the way you think! 😎👍
                            The least we can do is wave to each other

                            Comment


                            • #15
                              The C8 Stingray Z51 will go to eleven.

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