Fordmods Logo

Changing diff gears from 3.08 to 3.45/3.7 

 

Page 1 of 2 [ 17 posts ] Go to page 1, 2  Next

 
 Post subject: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:42 pm 
Parts Gopher
Offline

Age: 28

Posts: 79

Joined: 24th May 2010

Ride: 2008 BFII Fairmont Ghia

Location: Greystanes, Western Sydney
NSW, Australia

hey all

just found some nice 3.45 or 3.7 gears for my diff

wanting to know - is anything slse required other than swapping the gear in/out
will just a set of diff gears change me from single spinner to lsd

thanks for kind answers to dumb questions in advance

hunt3r

 

_________________

Rocky AKA The Tractor- ED Gli head+cam 3.7 limo 2x15' subs - gone but not forgotten
RED-JET - BFII Fairmont Ghia - Under Construction...
Rambo - NCII Fairlane Ghia 5.0l - just a daily runaround...

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:44 pm 
Getting Side Ways
Offline

Age: 41

Posts: 4629

Joined: 23rd Nov 2006

Gallery: 4 images

Ride: 5.0 AU's and 5.0 Maverick

Power: 139 rwkw

Location: Sydney West
NSW, Australia

No a ratio change on its own will not change you from a single spinner to an LSD.
You will need to have a LSD hemisphere fitted as well.

 

_________________

xr6turnip wrote:
More people paid for a ride in a VT commodore then an AU Falcon so the VT is superior.
Based on that fact my Mum is the best around!

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:46 pm 
Getting Side Ways
Offline

Age: 27

Posts: 584

Joined: 4th Apr 2010

Ride: AU falcon

Location: toongabbie
VIC, Australia

no the gears wont change it to a lsd and with diffs best to pay someone to do it

they need to be set with the correct backlash and such, to much stuffing about.

 

_________________

Au factory 5sp, rolling on 20'z, full custom extractors, redback cat and back. has a new motors, only 27,000ks

Welcome to Toongabbie motorsports :P

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:50 pm 
Parts Gopher
Offline

Age: 28

Posts: 79

Joined: 24th May 2010

Ride: 2008 BFII Fairmont Ghia

Location: Greystanes, Western Sydney
NSW, Australia

so i should sniff about for an lsd centre then take the whole package to a diff shop
good:)

also, 3.45 or 3.7?

 

_________________

Rocky AKA The Tractor- ED Gli head+cam 3.7 limo 2x15' subs - gone but not forgotten
RED-JET - BFII Fairmont Ghia - Under Construction...
Rambo - NCII Fairlane Ghia 5.0l - just a daily runaround...

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:52 pm 
Getting Side Ways
Offline

Age: 27

Posts: 584

Joined: 4th Apr 2010

Ride: AU falcon

Location: toongabbie
VIC, Australia

how much do you care about fuel economy?

 

_________________

Au factory 5sp, rolling on 20'z, full custom extractors, redback cat and back. has a new motors, only 27,000ks

Welcome to Toongabbie motorsports :P

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:53 pm 
Getting Side Ways
Offline

Age: 41

Posts: 4629

Joined: 23rd Nov 2006

Gallery: 4 images

Ride: 5.0 AU's and 5.0 Maverick

Power: 139 rwkw

Location: Sydney West
NSW, Australia

Pretty much.
Instead of spending up on an LSD and then repairing it for it to still be s**t you are better off going to a lockright locker. You can still drive it but fully locks when you are up it.

 

_________________

xr6turnip wrote:
More people paid for a ride in a VT commodore then an AU Falcon so the VT is superior.
Based on that fact my Mum is the best around!

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:54 pm 
Parts Gopher
Offline

Age: 28

Posts: 79

Joined: 24th May 2010

Ride: 2008 BFII Fairmont Ghia

Location: Greystanes, Western Sydney
NSW, Australia

not too much, i dont really do too much in the way of long trips, campbelltown is as far as i go lately and am planning to go for a while. in fact to think about it i dont drive very much at all anymore - sometimes the car can sit fr up to 3 days doing nothing

what kind of seat-of-your-pants difference will it make?

 

_________________

Rocky AKA The Tractor- ED Gli head+cam 3.7 limo 2x15' subs - gone but not forgotten
RED-JET - BFII Fairmont Ghia - Under Construction...
Rambo - NCII Fairlane Ghia 5.0l - just a daily runaround...

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:55 pm 
Parts Gopher
Offline

Age: 28

Posts: 79

Joined: 24th May 2010

Ride: 2008 BFII Fairmont Ghia

Location: Greystanes, Western Sydney
NSW, Australia

well then lock right or a 4wd lokka

 

_________________

Rocky AKA The Tractor- ED Gli head+cam 3.7 limo 2x15' subs - gone but not forgotten
RED-JET - BFII Fairmont Ghia - Under Construction...
Rambo - NCII Fairlane Ghia 5.0l - just a daily runaround...

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:57 pm 
Getting Side Ways
Offline

Age: 27

Posts: 584

Joined: 4th Apr 2010

Ride: AU falcon

Location: toongabbie
VIC, Australia

hunt3r wrote:
not too much, i dont really do too much in the way of long trips, campbelltown is as far as i go lately and am planning to go for a while. in fact to think about it i dont drive very much at all anymore - sometimes the car can sit fr up to 3 days doing nothing

what kind of seat-of-your-pants difference will it make?



if you dont care for economy go 3.7's
you will notice a fair difference with them.

 

_________________

Au factory 5sp, rolling on 20'z, full custom extractors, redback cat and back. has a new motors, only 27,000ks

Welcome to Toongabbie motorsports :P

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:57 pm 
Getting Side Ways
Offline
User avatar

Age: 28

Posts: 4326

Joined: 30th Oct 2006

Gallery: 18 images

Ride: Envi EF

Location: Grafton
NSW, Australia

lokka with 3.7s.

 

_________________

>>>EF Futura T build<<<

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Sun Aug 08, 2010 10:59 pm 
Parts Gopher
Offline

Age: 28

Posts: 79

Joined: 24th May 2010

Ride: 2008 BFII Fairmont Ghia

Location: Greystanes, Western Sydney
NSW, Australia

ive been looking at the lokka website. seems hunky doorey
what should i be paying for one of these devices?

 

_________________

Rocky AKA The Tractor- ED Gli head+cam 3.7 limo 2x15' subs - gone but not forgotten
RED-JET - BFII Fairmont Ghia - Under Construction...
Rambo - NCII Fairlane Ghia 5.0l - just a daily runaround...

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Mon Aug 09, 2010 1:17 pm 
Stock as a Rock
Offline

Posts: 149

Joined: 23rd May 2006

Ride: NL Fairlane

Location: Melburn!
VIC, Australia

Anyone have any real data for how much they jumped in consumption when changing ratios. I have a Fairlane with 3.89s in it and while the gears are great the car is my cruiser as I have another car thats my speedster. What kind of economy benifit would I get from going back to 3.45s?

FYI When cruising at 100km/h I am on about 2250 RPM.
Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Mon Aug 09, 2010 2:37 pm 
Getting Side Ways
Offline
User avatar

Age: 28

Posts: 4326

Joined: 30th Oct 2006

Gallery: 18 images

Ride: Envi EF

Location: Grafton
NSW, Australia

Well I run 3.45s behind a manual, and sit on 2200rpm @ 100ks... I wouldnt bother going back to 3.45s. I had 3.23s originally and get the same if not better economy now.

 

_________________

>>>EF Futura T build<<<

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Mon Aug 09, 2010 3:31 pm 
Getting Side Ways
Offline

Age: 29

Posts: 4182

Joined: 30th May 2005

Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

hunt3r wrote:
ive been looking at the lokka website. seems hunky doorey
what should i be paying for one of these devices?

about the $500 mark from 4wd systems. I love my Lokka, they are fukking awesome

 

_________________

ILL60 - EF XR8, Sunroof, Ticky Kit, 19x8.5/19x11 TE37's, 347, AFr185's, TFS BoxRcustom converter, Hurst Quarterstick, huge billet cam.

51TER - DL LTD. Stock.

Top
 Profile  
 
 
 Post subject: Re: Changing diff gears from 3.08 to 3.45/3.7
Posted: Mon Aug 09, 2010 6:04 pm 
Getting Side Ways
Offline
User avatar

Age: 39

Posts: 694

Joined: 6th Apr 2007

Ride: 98 NL, 97NL, 98EL

Power: 141 rwkw

Location: Sunny Coast or Beerburrum
QLD, Australia

also, remember, if you have 3.08 gears, 3.45 or 3.70 won't fit into your 3.08 housing, you will need a 3.23 one to fit a higher ratio setup.

Laticia.

 

_________________

BANNED!!!!

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 2  [ 17 posts ]  Go to page 1, 2  Next

Who is online

Users browsing this forum: No registered users 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 Fri Dec 15, 2017 9:50 pm All times are UTC + 11 hours

 

 

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