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3.7's in au falcon 

 

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 Post subject: 3.7's in au falcon
Posted: Thu Apr 04, 2013 2:33 pm 
Stock as a Rock
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Age: 30

Posts: 131

Joined: 30th Jan 2012

Ride: au sr

Location: Lara
VIC, Australia

hey all,
looking at getting my LSD reco'd and put in a set of 3.7's, or maybe 3.9's in it.
just wanting to know how much of a gain 0-100 roughly on each?
and to correct speedo, could i just get it done through the xcal 3 flash box instead of getting a speedo sensor?
thanks

 

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 Post subject: Re: 3.7's in au falcon
Posted: Thu Apr 04, 2013 9:37 pm 
Moderator
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Posts: 14489

Joined: 7th Nov 2004

Ride: AU XR8

Location: a shit suburb in sydney
NSW, Australia

I couldn't tell you about the 0-100 difference, but the speedo difference will need a jaycar speedo correcter..

the xcal can do speedo calibration but only on b series..
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 Post subject: Re: 3.7's in au falcon
Posted: Thu Apr 04, 2013 9:46 pm 
Getting Side Ways
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Age: 48

Posts: 4604

Joined: 23rd Nov 2006

Gallery: 4 images

Ride: 5.0 AU's and 5.0 Maverick

Power: 139 rwkw

Location: Sydney West
NSW, Australia

I couldnt tell you to be honest.
I just had 3.9's put in my ute today and while it pulls a lot harder , its actually doesnt feel faster.
Its strange.
But it does drive very well.

 

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More people paid for a ride in a VT commodore then an AU Falcon so the VT is superior.
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 Post subject: Re: 3.7's in au falcon
Posted: Sat Jun 01, 2013 10:54 pm 
Fordmods Newbie
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Age: 32

Posts: 9

Joined: 19th Sep 2012

Ride: au3 2002

Location: townsville
QLD, Australia

I put 3.7's with lsd in mine, sits on 2100 at 100km. Did make quite a difference

 

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[i]Auto Au Falcon, raptor supercharger, methanol injection, custom 3inch exhaust, water to air intercooler, 3.7diff with lsd, Fully reconditioned t5, heavy duty clutch, light weight tailshaft

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 Post subject: Re: 3.7's in au falcon
Posted: Sat Jun 01, 2013 11:06 pm 
Moderator
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Posts: 14489

Joined: 7th Nov 2004

Ride: AU XR8

Location: a shit suburb in sydney
NSW, Australia

I put 3.73 from 3.45 in my au recently aswell and it took .3 off my 1/4 mile time by just the ratio change, it sits at 2450rpm @110...
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 Post subject: Re: 3.7's in au falcon
Posted: Sat Jun 01, 2013 11:39 pm 
Getting Side Ways
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Age: 35

Posts: 3382

Joined: 11th Mar 2008

Ride: EA SVO, AU2, Toyota Crown

Location: Bendigo
VIC, Australia

with my EB it did a 15.7 1/4 mile with a Tickford motor. Small Wade cam, full exhaust and 3.23 diff gears. I Converted to manual and went 3.89 diff gears. dropped a whole second. Got it down to 14.7

 

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Weekend car: AU2 "XR8" 220kw 5L 5 speed. 19" BBS LM . Full exhaust. Lowered on Kings and Koni's. 13.8@97mph
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