Shaka

What does tighten up mean? Do you mean close ratios? 4th is direct. Input shaft and output are locked together in 4th. You can bring 1,2,3,5 and 6 closer to 4. This is called closing the ratios. The first 3 gear ratios become taller(higher) and the the last two become shorter(lower) Under and over drive. The lower the gearing, the higher the ratio and VV.

For 4.10 gears( ring gear[crown gear] and pinion gear) on the rear axle, slicks will be neccesary. The axle ratio multiplies torque. In 4th, the engine turns one revolution to the rear wheel's 4.1 revs. Wheel diameter will further the mechanical advantage or dis advantage. Watch dragsters change their gearing as the tires increase their diameter in the run.
Circle track cars have quick change ratios in the rear axle. Class 8 trucks have torque splitter ratios making a 5 speed a 10 speed xmission. Separate overdrive units mounted behind the gearbox like the ones on old Jags and Vettess gave you an 8 speed gearbox. Check out your bicycle gears.
There a shops that will build your T56 or 60 with any ratios you want.
I like em tight or close. Remember the Mucie M21 and 22? Lordy Lordy.

Jp23rockstar

I heard that the c7 will have two new colors one is mint pearl and one is a real dark blue hue that looks black with a hint of purple. You guys can believe me or not is up to you. But this is true.

pTr73

I dont know the dynamics of gearing especially the tranny in our cars. When I say tighten yes I mean make them closer in ratio. If they made a 7spd is 4th still direct or will 5th be direct? Either way I am assuming you can make the ratios closer to one another if you have more gears overall. Sorry if I am not making sense, as I said I am not to nifty with dynamic speech on certain things.

The term "tighten up" came from the article I read which I posted the link on here.

hig4s

Ding, ding, ding..
If there won't be any radical changes to the ratios, then there is no need for a 7th gear, which is what I said!!!!

But, if two identical cars, with the same gear ratios are racing, and all other things being equal, the one that shifts faster will be going faster.

Which is why so many people keep arguing the C7 needs DCT..

ANTIVNOM

I'm just fine if they want to offer the DCT as an option. You couldn't give me one, I hate automatics. As long as there is a proper manual gearbox available, I'm a buyer. No manual, no sale.

pTr73

What do you mean exactly? There isnt much of a ratio difference between a non-z51 and z51 car. Except 1st - 3rd and the z51 pulls harder than the non-z51 correct? So if you shorten the ratios of 1- 4(meaning making them shorter than the current z51 setup) the car would pull a bit harder. If you do that then a 7th gear might be justified since your shortening the lower gears even more than what they are. As i said before, 1 - 5 could be drive gears and 6 & 7 the overdrives.


This goes without saying, of course 2 cars equal gearing, tires, hp, torque, same driver weight etc. If one driver happens to shift a bit faster and can launch better obviously we know the outcome of this. F

4SUMERZ

Just read the Mar 12 issue of Vettes magazine and in the issue, they talk about the C6 Auto transmission and the computer upgrade to the 2012 transmission, which is patented by GM. The 2012 transmission gets the new upgrade, but they will not offer it to 2006-2011 transmissions. It upgrades the 1-2 shift, the 2-3 shift and 3-4 shifts on the manual paddle mode. It improves the response time by 65%.

hig4s

I keep saying exactly what I mean, but let my try again for you.

Corvette is not a race car, it is a street car that people like to race around in..

And seeing as it is not a full race car the only time 6th gear is needed is on the freeway cruising to get better gas mileage.

So even if they want to shorten the gear ratios of 3rd, 4th, and 5th there is no reason for a 7th gear.

And because the engine is so big, and has so much torque it really doesn't need a closer ratio gear box. It is not a narrow torque band, 4 cylinder engine.

I actually like the 6 speed, but in reality it really doesn't even need 6, I almost never use 3rd, and mostly use 5th when I am cruising too slow to use 6th.

Just checked the ratios, current LS3 5th at 6500 rpms would be over 200mph. If the engine would pull it.. So they could easily give the base the same 1 to 5 ratios as the ZR1 and leave 6th were it is and 5th would still be good for 185mph..