Which 5th gear should I use?

[Bense]

I've have a blue-top H23A VTEC and i'm doing a transmission build. Here are my ratios

3.285
2.0909090909
1.481481481481481
1.071
0.812 OR 0.87x

(truncated after 5 decimal places, cause i only know the absolute values for 2nd and 3rd gears, and only approximate values for the others)
1st -> 2nd = 0.63650
2nd -> 3rd = 0.70853
3rd -> 4th = 0.72316
4th -> 5th = 0.75816
OR
4th -> 5th = 0.81325

I like the shorter 5th, but I don't like the 2nd order change in the decrease in gear reductions in upshifting. I can do a linear regression and plot the curve if need. But it'll be ugly with the .871


I wish there was a 1.12 4th gear. Mfactory has a badass 1.1000 4th gear, but it's their 'pro-series' and it's not helical. How funny would it be to have a straight cut spur gear for ONLY 4th gear lol

mmmmmm--mmmmm-mmmmm-WHEEHEHEHEHEHHEE-mmmmmm


And no, I'm not using a 0.685 5th so don't even bother suggesting that. It's too 'tall' on the hilly highways here. I wind up bumping up cruise control and not paying attention cause I wind up decelerating while going up hills. And then I wind up forgetting that I'd hit the accel button a few times and when I get on level ground, cruise control has me going 87 in a 70mph.

That state trooper was not amused when I responded to his inquiry of "so why were you speeding" with "Sorry I didn't realize how high of latency the cruise control system on this car was until I realized I was speeding just now. DESPITE having my multidomain control systems textbook in the passenger seat.

[sonikaccord]

What are your goals? It sounds like you're building a street car. What is your driving style? How often will you use 5th and what will you be doing in 5th?

It's easy to build by the numbers, but real world application is where it matters.