Fordmods Logo

3.7 Diff 

 

Page 1 of 1 [ 10 posts ] 

 
 Post subject: 3.7 Diff
Posted: Mon Apr 11, 2005 2:20 pm 
Smokin em up
Offline

Age: 64

Posts: 225

Joined: 9th Nov 2004

Ride: EDV8 Fairmont

Location: perth
WA, Australia

I am putting in LSD 3.7 into 5.0L ED Fairmont.
Is there a speedo gear to suit or electronic adjustment.
It is an auto.
Richie.

 

_________________

1993 ED F/mont 5.0L, Auto, Edelbrock RPM's, CompCam XE276HR, Crane Gold Race 1.7's, Edelbrock Performer, 75mm T/B, MAP, 42lb , GenIII coils, PH4000's , Twin 2.5", Thermos & underspeeds, 3.7 LSD, 2800 stall and MoTec M800, 372fwhp @ 5400rpm & 387 ft-lb @ 4400 rpm.

Top
 Profile  
 
 
Posted: Mon Apr 11, 2005 5:01 pm 
Getting Side Ways
Offline
User avatar

Age: 46

Posts: 1040

Joined: 5th Nov 2004

Gallery: 5 images

Ride: EA Fairmont Ghia

Location: Melbourne
VIC, Australia

No there isnt the best you can do is a gear for a 3.45 diff, you will need to get an electronic speedo adjuster kit like the one from jaycar.

 

_________________

Full working BA Shifter now upgraded to BF Shifter.
BA headlight inserts in my EA headlights.

Top
 Profile  
 
 
Posted: Mon Apr 11, 2005 7:24 pm 
Parts Gopher
Offline

Age: 35

Posts: 65

Joined: 8th Nov 2004

Location: perth
WA, Australia

If you go to your local ford dealer they can tell you what speedo gear you need! What ratio is your diff now??? I came up from a 3.08 and it was a black 23 toothed speedo gear and was $10
Top
 Profile  
 
 
Posted: Mon Apr 11, 2005 9:25 pm 
Smokin em up
Offline

Age: 64

Posts: 225

Joined: 9th Nov 2004

Ride: EDV8 Fairmont

Location: perth
WA, Australia

current ratio 3.27

richie.

 

_________________

1993 ED F/mont 5.0L, Auto, Edelbrock RPM's, CompCam XE276HR, Crane Gold Race 1.7's, Edelbrock Performer, 75mm T/B, MAP, 42lb , GenIII coils, PH4000's , Twin 2.5", Thermos & underspeeds, 3.7 LSD, 2800 stall and MoTec M800, 372fwhp @ 5400rpm & 387 ft-lb @ 4400 rpm.

Top
 Profile  
 
 
Posted: Tue Apr 12, 2005 4:38 pm 
Getting Side Ways
Offline

Age: 36

Posts: 2215

Joined: 5th Nov 2004

Gallery: 17 images

Ride: Oettinger Golf GTI

Location: Sydney
NSW, Australia

alternatively

ebay, search worldwide on 3.7
and u can get one from the states (white)
Top
 Profile  
 
 
Posted: Wed Apr 13, 2005 10:31 am 
Getting Side Ways
Offline
User avatar

Age: 43

Posts: 451

Joined: 29th Nov 2004

Gallery: 1 images

Ride: XR8(EF) & XR8BOSS290 Ute(FG)

Location: Sydney
NSW, Australia

Dellboy999 wrote:
No there isnt the best you can do is a gear for a 3.45 diff, you will need to get an electronic speedo adjuster kit like the one from jaycar.


If you do this you may run into troubles with your auto shift patterns as the auto ecu get feedback from the speedo. Say for example your car your car would shift at 5400rpm at WOT with a diff change (3.27 to 3.73) and speedo adjustment your car now, your car wont shift until it hits about 6160rpm, alright if you have a worked motor but not much good if its a stocker. The best thing you can do is just live with a bit of speedo error and make up a card to show what your indicated and actual speeds are.

 

_________________

________________________________________

Better off with not enough traction than not enough power.

Top
 Profile  
 
 
Posted: Wed Apr 13, 2005 5:03 pm 
Smokin em up
Offline

Age: 64

Posts: 225

Joined: 9th Nov 2004

Ride: EDV8 Fairmont

Location: perth
WA, Australia

I believe that a black speedo gear out of XF falcon has 23 teeth which is what I think you need for 3.7 diff. But I thought ratio for XF was 3.5.

Mick Webb thought Monaro used white 23 tooth for 3.7 but am not sure if it fits 95LE tranny.

Any thoughts?

 

_________________

1993 ED F/mont 5.0L, Auto, Edelbrock RPM's, CompCam XE276HR, Crane Gold Race 1.7's, Edelbrock Performer, 75mm T/B, MAP, 42lb , GenIII coils, PH4000's , Twin 2.5", Thermos & underspeeds, 3.7 LSD, 2800 stall and MoTec M800, 372fwhp @ 5400rpm & 387 ft-lb @ 4400 rpm.

Top
 Profile  
 
 
Posted: Mon May 09, 2005 12:14 am 
Fordmods Newbie
Offline

Age: 34

Posts: 2

Joined: 26th Apr 2005

Ride: Fartbox 5000

Location: Melbourne
VIC, Australia

jaycar $44.95 check out their website

:f@rt:

 

_________________

f@rt :f@rt:

Top
 Profile  
 
 
Posted: Mon May 09, 2005 3:28 am 
Getting Side Ways
Offline
User avatar

Age: 33

Posts: 927

Joined: 6th Nov 2004

Ride: BA Falcon EGas

Location: Perth
WA, Australia

AXR88U wrote:
Dellboy999 wrote:
No there isnt the best you can do is a gear for a 3.45 diff, you will need to get an electronic speedo adjuster kit like the one from jaycar.


If you do this you may run into troubles with your auto shift patterns as the auto ecu get feedback from the speedo. Say for example your car your car would shift at 5400rpm at WOT with a diff change (3.27 to 3.73) and speedo adjustment your car now, your car wont shift until it hits about 6160rpm, alright if you have a worked motor but not much good if its a stocker. The best thing you can do is just live with a bit of speedo error and make up a card to show what your indicated and actual speeds are.


If you have a manual, would there be any other issues with using the jaycar fix?

 

_________________

BA Falcon Futura on EGas. Stock as...

EF 5 speed manual; PH 4480 Pacemaker Headers; 2 1/2" Lukey Mandrel Bent System; Hi Flow Walker Cat; Stage 3 Crow Cam; ChipTorque Chip; 3" Mandrel Bent Intake; K&N Pod Filter; Low Pedders Suspension; 17" EL GT Champagne Rims; RPM Series Clutch

Top
 Profile  
 
 
Posted: Mon May 09, 2005 2:17 pm 
Getting Side Ways
Offline
User avatar

Age: 35

Posts: 516

Joined: 20th Dec 2004

Gallery: 4 images

Ride: EL Manual

Location: S.E. Melbourne
VIC, Australia

I would have thought that an auto would use RPM vs Throttle to control the shift points. Does it use the speed aswell or instead of RPM?

 

_________________

Manual EL Gli.
Mods: Crow Stg3, Chiptorque Dynotune. Lukey Exhaust. DBA slotted rotors, EBC Pads. Whiteline Low Susp. EL GT Swaybars, ROH Envy 17 x235 wheels. Vehicle Datalogger Display V2.0,

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 10 posts ] 

Who is online

Users browsing this forum: Google [Bot] and 9 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 Sat Dec 16, 2017 5:13 am All times are UTC + 11 hours

 

 

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