JakeRobb is my hero. Misuse of the English language drives me insane, as well.

 

I put all this info into the speed calculator @ http://f-body.org/gears/

Watching the video and comparing the speed shown vs that calculator will let you know that he did shift right around 6000 in each gear.

That calculator shows that 3rd gear can be held until 112MPH, so I have a feeling that GM's engineers set this car up to run the best in the quarter mile without needing a shift to 4th in stock trim. That's kind of like how they set up the Z06 to not require a shift before 60mph

I also put it into DragSim. At 4050 pounds and on its most conservative level (.25seconds per shift @6k) it still ran a 13.10@110.8 with a 2.55 sixty foot. When set to a professional driver with .100 second shifts @6500 it ran a 12.43@114.1 with a 2.07 sixty foot time. Changing to stickier tires drops that to 11.99@114.6 with a 1.90 sixty foot. I was guesstimating a lot though.

 

Guesstimating is not a real word!!! Language police! Language police!!!



In all seriousness, thanks for that info . I was curious how the gearing was going to work out with the taller tires and modest 3.45 rear gear. Clearly, a set of 4.10's and sticky tires will do WONDERS for the car .

..... and shifting QUICKLY, above 6000 RPM .

 

I definitely think GM worked hard on this car to get it to run the number. I personally don't like the choice of gears from a drag racing perspective but I think they put in more work that they probably did on the 4th Gens when it came to 0-60 and 1/4 mile acceleration. When you think about the fine line between bettering the performance of the current competition and getting the gas mileage numbers while maintaining the large wheel diameter for style and moving the high curb weight it was really well done.

 

FYI, I'm pretty sure that GMHTP got 12.8 out of a bone stock 1998 LS1 Z28.

Edit: I stand corrected....it was 13.0. I thought it was around 12.8 for some reason.....I'll keep looking, but you are correct Robb.

 

What is the weight on an 03 04 cobra anyways?

 

Your close. Evan Smith of MM&FF a sister publication to GMHTP drove the famed 1999 Z28 6M to a 12.89 at Atco raceway in very good cold air. He then backed it up in a 2001 SS 6M to a 12.96 in far hotter conditions at ETown.

 

Time to post it again for the zillionth time

 

My name is Jake.

That is completely in agreement with what I said: 12.9 @ 111 is faster than all, and quicker than nearly all known stock LS1 4th gen timeslips.

That GMHTP run is the only sub-13-second run I've ever heard of on a bone-stock LS1 car. It's far from the norm.

 

3600 and some change, if memory serves.

 

Not bad times considering the circumstances, but not impressive either when people are paying $50k out the door.

 

Just looked it up. 3665 for the coupe. Good memory, Bob!