wat kinda final drive should i get is 4.9 to much?

 

Do you plan on driving on a highway for long periods of time?

I have a 4.7, I wish I had a 4.9...

Anyways to give you an idea of the ratios..

Y21 tranny, 4.785 final drive..

50 kp/h @ 5th gear 2,300 some rpm's.

 

yea ill prolly do highway driving.. ima fast driver and speed by us is 55mph to 75mph so i
dont want 4k crusing speeds while im goin down the high way.. i also for got to say that
its a d16z6 that i wanna do the fd upgrade to

 

Use this calculator to find a fair median for a highway driven car and short gear rations

http://www.zealautowerks.com/transcalc.php

input your transmissions current gear ratios and play around with the final drive.

 

that was a big healp.. now ill i gotta do is make decide which i like im think 4.7 its more than the 4.25 stock dseries fd and not too much i hope i still want it as a dd and it will be gettin a built high comp d16 soon

 

that was a big help.. now ill i gotta do is make decide which i like im think 4.7 its more than the 4.25 stock dseries fd and not too much i hope i still want it as a dd and it will be gettin a built high comp d16 soon

 

i think like should do done 4.7 in mine i still drive sum hwy road speeds high

 

yea.. i dont want to b at 4k in 5th drivin down the highway at 80

 

The link is great for visualizing the gear differences.

Thats what has made me want a ls 5th gear in the B16 tranny. have fun. But still be able to drive on the highway at bellow 3.5k

 

type r one lol

 

yea so i may get a longer fifth gear and a higher fd si it lowers the speed but i dont lose all my acceleration

 

Yap that works, I personally havent done it. But after buddies were making bets that it wouldnt make a difference , one did it. And cruising on the highway in his em1 at 110 km/h he dropped if i remember correctly 500 rpm . ( stock FD 4.4)

Said if you are not gas happy youll see some gains, but if you are gas happy you will be downshifting alot more to pass on the highway vs the normal gearing.

But in your case as your upping the FD it might net you the same stock 5th gear gearing.

 

o ok.. well i wanna figure something out to lower the
5th rpms at 80.. idk if lighting the rotating mass like
the fly and stuff likke that will help.. i kmow bigger
tires will help some