http://www.f-body.org/gears/

Victor

 

here's one i think is cool, it shows all gears on a rpm vs mph chart and you can move the mouse over the chart to show exact speed at those rpm's in any gear applicable:

http://www.geocities.com/z_design_st...nsmission.html

2003 350z MT
1st 3.79
2nd 2.32
3rd 1.62
4th 1.27
5th 1.00
6th .79
final drive 3.54

enjoy

 

Here's a graph I made using the link from the original post. It's fairly accurate I guess. I can make another one more accurate if you guys want. This will help in calculating 3-pedal/heel-toe.

 

Stock gear ratio on the 350z again... This time, I used 5 mph increments.

 

Great info.

Warmly,

Michael
VRT

www.ViolentRacing.com

 

Anyone has this for the 5AT?

 

here's a free gear calculator.

go to gear calculators section and click on the 350Z/G35 link.

you can change wheels, tread width, aspect ratio, rear axle ratio, transmission gear number and rpm. You dynamically see what the speed in mph will be.

http://www.speedshoppro.com/GearCalc...alculator.html

www.speedshoppro.com

 

dude i love that ****ing calculator man... now just imagining proving that it works....

 

I'm suprised at how many questions can be answered with this or similar calculators

you can plug any car's setup into it and see what torque multiplication factor you'd have at any given speed vs another car's.

Anything having to do with top speed can be answered by plugging stuff into it. Or the rpms you will start the next gear at if you could instantly shift

 

Damn with a 3.3FD(auto) and 7000rpm redline I could do 129mph in 4th (my redline is 7300rpm's) so I could theoretically cross the traps in 4th without that damn 4-5 notchy shift. Great calculator, thanks for posting....

 

stock 3.54FD and RB25 tranny gears I will be doing 132mph in 3rd gear at 7800rpm 1st gear will be at damn 53mph , 2nd gear will top out at 89mph, and damn 4th gear is 171mph....thats just stupid cause 7800 rpm isn't very extreme at all....maybe I will be going to 3.9 gears sometime down the road.

 

You will never make power past 7000rpm's with the stock lower plenum and pump gas in a FI VQ.

 

sorry didn't clarify...its not a vq

 

I tried both of these calculators before i bought my 3.9fd to make sure i could finish the 1/4 mile in 4th gear but i couldn't do it. put in the tire size of 275/40/18 and both calculators say i should hit 109 @ 6800 rpm.

truth is i couldn't hit 103 with my 3.9fd. now i'm wondering if my fd wasn't 3.9...

 

I have been doing this for various cars for about 15 years using Excel. As the other charts, it shows speed vs engine RPM.

I also add the shift-points just before the redline, and extend lines from the shift point back to the RPM of the higher gear after the shift. For example, if you shift at around 7300 RPM from 1st to 2nd (around 41 mph), when you engage 2nd the RPM will threoretically be around 4500. Of course, there will be some drop in speed and RPM, but it gives you an idea.



Nando

 

Here's anothe graph hot off the presses for us non-revup guys. I haven't seen it done yet, so I thought I'd lay out all the FD options on top of each other so you can get a good comparison of what is changing and by how much. You revup and HR guys simply need to extend the lines up to your redline. One thing I did notice is that the HR has gearing capable of reaching 200 mph! You HR guys definitely wanna go to a tighter FD (either 3.7 or 3.9).

 

any chance I can get that exel file???