gearbox ratio comparison

[dhetz]

i have two option of gearbox that will fit to my ZC sohc block which is ZC DOHC cable and ZC sohc ZXi.. and i have used gear ratio calculator with 9000 max rpm and 15" wheel..and these are the results :

ZC DOHC
ratio rpm mph
1. 3.250 - 33
2. 1.944 5383 54
3. 1.346 6231 79
4. 1.033 6907 102
5. 0.878 7650 120
FD 3.8


ZC SOHC ZXi
ratio rpm mph
1. 3.250 - 28
2. 1.894 5245 48
3. 1.259 5983 73
4. 0.937 6698 97
5. 0.771 7406 118
FD 4.4

from these result, i wonder which is the best fit for me.. best for 1/4 miles

i have an option to change the ZC DOHC's FD to 4.2 too.. but i have check with calculator not so good, because i have lower mph at the same rpm with 3.8

last but not least, which is easier to fit with my engine..

thx alot

[transzex]

me, I'd mix and match, the DOHC 3-4 into the ZXi box......I'll be using that gearing on the race tranny I'll be building.

[dhetz]

thx for reply mista bone..

ooh yeah i got it.. your suggest is better
but if i have no option to change 3-4 gear, and must choice only one from that two, which one is the best ?

because i will use not only race but for daily too,and sometimes in highway

but sorry im noob about this, i wonder how to know which ratio that good or bad by look from rpm and speed shifting ?can u help to expain

last but not least, why u choose ZC sohc ZXi Box not ZC dohc box for my engine,are there any more requirement or mod that i must to do if i use dohc one to fit to my zc sohc egine?or both of them are the same?

[transzex]

Now you want me to think, I don't do that on weekends!

[dhetz]

i think just look at both of that gearbox... u as 'tranny god' dont have to think alot for this ;) haha

okay maybe next day u or maybe ppl can answer if not now

[dhetz]

anyone can help me to get conclusion..?

[Eyal 951]

rpm's are off unless you have tiny sidewalls.

[DirtyDC4]

rpm's are off unless you have tiny sidewalls.

He could be revving really high...like this kind of high: :bong:

[dhetz]

i still dont know what that mean.. im sorry, any explain bout this:confused: