Fordmods Logo

3.7 or 3.9 with Manual 

 

Page 2 of 2 [ 22 posts ] Go to page Previous  1, 2

 
Posted: Thu Jul 13, 2006 7:41 pm 
Oompa Loompa
Offline

Posts: 43

Joined: 10th Mar 2006

Gallery: 2 images

Ride: XH XR6 UTE

Location: ipswich
QLD, Australia

not that i wanna steal the thread...but on a similair topic, whats the best gearing for a 4spd auto that people have found???It seems that 3.9s seem the best for a modded 5speed manual..so i was just wondering... :wink:

 

_________________

HSV ETR nah just kidn...xh XR6 ute
Dev5 kit,3000stallie,fullshiftkit,tint,custom leather interior,JVC sound gear,17"wheels235tyres,pedders lowered and very proud

Top
 Profile  
 
 
Posted: Thu Jul 13, 2006 8:28 pm 
Tyre Shredder
Offline
User avatar

Posts: 387

Joined: 12th Dec 2004

Gallery: 4 images

Ride: 2005 Hi-Ace

Location: melbourne
VIC, Australia

mrnasty wrote:
good point...
my mates 10 second calais turbs runs a standard diff and gear set. 315rwkw.

whats the ratio in the VL turbo diffs...anyone know?


3.45 factory.

 

_________________

2005 Toyota Hi-Ace aka ICE CUBE

Top
 Profile  
 
 
Posted: Thu Jul 13, 2006 8:32 pm 
Getting Side Ways
Offline
User avatar

Age: 34

Posts: 2351

Joined: 11th Nov 2004

Gallery: 30 images

Ride: Blown XR8

Location: Melbourne
VIC, Australia

I would've thought 3.9's would be way to short for a manual. It'll slow the car down over the quarter for sure. 3.7's would probably be the highest i'd go in a 5 speed.
Top
 Profile  
 
 
Posted: Thu Jul 13, 2006 9:11 pm 
Stock as a Rock
Offline
User avatar

Age: 35

Posts: 195

Joined: 6th Nov 2004

Location: melbourne west
VIC, Australia

iv egot 3.9's in my manual xr8 and i love it launches heeps harder and theres more accleleration right through to redline. it makes it easier to drive. i managed a 13.9 with 3.9's and exhaust extractors out of my xr8 in full street trim.

 

_________________

series3 xr8 5 speed manual, pacemaker extractors, 3' exhaust, lowered cold air intake, k&n filter, interior, 3.9s
13.9584 @ 98.51 mph 1.9447 60 ft
188.9rwkw 525nm torque
AU2te50 lowered twin 2.5 inch exhaust

Top
 Profile  
 
 
Posted: Sun Jul 16, 2006 8:03 pm 
Getting Side Ways
Offline
User avatar

Age: 30

Posts: 2280

Joined: 5th Nov 2004

Ride: EF Falcon 95

Location: Rosebud
VIC, Australia

ELXR8 wrote:
I would've thought 3.9's would be way to short for a manual. It'll slow the car down over the quarter for sure. 3.7's would probably be the highest i'd go in a 5 speed.


i was thinking the same thing,

3.45 in a manual works out to about 50km/h roughly in first yeah?

so 3.7's would do maybe 40-45km/h?

3.9s? 30-35km/h? Thats a short first gear!

 

_________________

Cougar Zero makes my pants fit nice.

Top
 Profile  
 
 
Posted: Sun Jul 16, 2006 9:00 pm 
Getting Side Ways
Offline
User avatar

Age: 34

Posts: 2351

Joined: 11th Nov 2004

Gallery: 30 images

Ride: Blown XR8

Location: Melbourne
VIC, Australia

I'm not 100% sure, but i doubt i would get more tahn 50km/h outof first in mine, and thats with 3.23's.
Wild6 is getting some good times with the mods he has, and diff gears of course are a good way to get some better times. In most of the Falcon's i still believe that 3.9's will give you great acceleration in 1st and 2nd, but it would die in the a*** a bit in 3rd and 4th.
So it can slow your quarter mile time, but your 0-100km/h times would be a lot better.
Top
 Profile  
 
 
Posted: Sun Jul 16, 2006 10:43 pm 
Stock as a Rock
Offline
User avatar

Age: 35

Posts: 195

Joined: 6th Nov 2004

Location: melbourne west
VIC, Australia

i actually find that 3rd is still my quickest gear (as with most manuals) only thing is thatits a bit shorter than before and it still flies through 4th. it did take a copule of weeks for the computer to learn the 3.9 gears then it felt stronger.
1 of the things i noticed when i first got them was that the stock cam felt inaddequite for the way that the car would accelerate. it was like it showed up that weakness more than when it had the 3.45s. but i still reckon it was a massive improevement for my car

 

_________________

series3 xr8 5 speed manual, pacemaker extractors, 3' exhaust, lowered cold air intake, k&n filter, interior, 3.9s
13.9584 @ 98.51 mph 1.9447 60 ft
188.9rwkw 525nm torque
AU2te50 lowered twin 2.5 inch exhaust

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 2 of 2  [ 22 posts ]  Go to page Previous  1, 2

Who is online

Users browsing this forum: No registered users and 11 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Fri Dec 15, 2017 6:26 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names