gear ratios

ONLY for ADVANCED technical discussion about the 240sx!
gcracker25
Posts: 8
Joined: Sat Sep 25, 2010 3:32 pm

Post

hey im building a 240sx with a rb20det swap that will include a gt35r turbo, hks rb20 camshaft 9mm, adjustable camshaft gears,strong valve springs, supertech low compression pistons..etc....im just trying to figure out what gear ratio for my rear end i should use to maximize the "all around" performance not just one particular field...any suggestions?


User avatar
OutToWinPAHC
Posts: 8810
Joined: Thu May 31, 2007 12:19 pm
Car: 2015 Chevy Silverado
Nissan Skyline R33 GTS-t
Nissan Skyline R32 GTR
Nissan RB20 E46 RHD
2015 Harley Vrod Muscle
1990 Nissan Patrol
Location: PA
Contact:

Post

Check this thread
the-ultimate-final-drive-gear-ratio-thread-t228683.html

The GTR and S13 use a similar ratio. How do you plan to use the car? The stock 4.08 should be good, but you certainly could use the 3.916.

I use the 3.692 myself

gcracker25
Posts: 8
Joined: Sat Sep 25, 2010 3:32 pm

Post

Its going to be like a car im going to drive fairly alot but i want it to have good pulling power from freeway and street speeds.

gcracker25
Posts: 8
Joined: Sat Sep 25, 2010 3:32 pm

Post

Its going to be like a car im going to drive fairly alot but i want it to have good pulling power from freeway and street speeds.

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

the 3.916 gears are great for top speed racing. as for the 3.692 gears, they are crazy for top speed! if you are looking to kill with only a couple gears on the freeway to prove a point and back off the 4.60 are crazy quick gears but kills your top speed.

gcracker25
Posts: 8
Joined: Sat Sep 25, 2010 3:32 pm

Post

so for something that would give me hell of hard pulling power and top speed like a happy medium what would you suggest?

User avatar
OutToWinPAHC
Posts: 8810
Joined: Thu May 31, 2007 12:19 pm
Car: 2015 Chevy Silverado
Nissan Skyline R33 GTS-t
Nissan Skyline R32 GTR
Nissan RB20 E46 RHD
2015 Harley Vrod Muscle
1990 Nissan Patrol
Location: PA
Contact:

Post

stock 4.08 or 3.91

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

OutToWinPAHC wrote:stock 4.08 or 3.91
2nd the 408's

User avatar
fiznowler
Posts: 1492
Joined: Mon May 07, 2007 4:34 am
Car: 97 240sx se, 5 speed, paint, tan leather interior. vg30dett swap in progress.
86 300zx NA Daily Driver
Too many other nissans and parts to list!
Location: Springfield, Mo

Post

not to jack but does anyone know off hand what s14 stock gears are?

User avatar
fiznowler
Posts: 1492
Joined: Mon May 07, 2007 4:34 am
Car: 97 240sx se, 5 speed, paint, tan leather interior. vg30dett swap in progress.
86 300zx NA Daily Driver
Too many other nissans and parts to list!
Location: Springfield, Mo

Post

I am a tard I should have clicked link.


Return to “240SX Technical Forum”