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#1 | ||
Regular Member
Join Date: Nov 2016
Posts: 205
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Hey I'm looking to upgrade my diff gears in the AU,thinking 3.7s or 3.9s would be ok..do ba xr6 have 3.7 or xr6 turbo....
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[B]WTB (Syd)...AU 5.0 or xr8 4 speed auto transmission in good working cond /B] |
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#2 | ||
FF.Com.Au Hardcore
Join Date: Dec 2007
Location: Ballarat
Posts: 2,124
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No. 3.45. M78 diff is shared in heaps of commodores and others. Skylines and pintaras are the most common donors for 3.9 and 3.7. They're a bit hard to get now be cause everyone wants them, new gears can be had for $400 all the way up to 4.11. I found a shop in Melbourne to supply and install for $1000
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#3 | ||
FF.Com.Au Hardcore
Join Date: Jun 2017
Posts: 1,341
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#4 | ||
FF.Com.Au Hardcore
Join Date: Feb 2012
Location: Albury, NSW
Posts: 1,699
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You'll find 3.73 gears behind 6 speed manual falcons. However, Turbo and V8 models are M86 and will not fit your housing. As mentioned, you can find the ratios you're after in old pintaras and skylines. But be warned, there are 3.89 and 3.91 ratio from those models. You want the 3.91 as the 3.89 are notorious for whining. I used the 3.89 in my BA and they whined like a banshee. To the point I went back to a 3.45 (I do miss the acceleration though).
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2017 Ranger XLT 3.2L Hi-rider |
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#5 | |||
2009 xr turbo,2004 fiesta
Join Date: Oct 2017
Location: Perth wa
Posts: 662
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Quote:
I haven't fitted them yet though $$$$$$ |
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#6 | |||
FF.Com.Au Hardcore
Join Date: Aug 2016
Posts: 820
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Quote:
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#7 | ||
Regular Member
Join Date: Nov 2016
Posts: 205
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Thanks for the info ...so with the skyline diff is that from the regular 32.33 gts gtr type or the boxy shape earlier one the 31 and what model fords got the 6 speed manual...are these lsd centres
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[B]WTB (Syd)...AU 5.0 or xr8 4 speed auto transmission in good working cond /B] |
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#8 | |||
XR6T BA 2002
Join Date: Apr 2011
Posts: 681
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Quote:
0431557226 Call Glen He built my diff, he used a VL turbo LSD 4 pinion and 389s from a skyline I have no Whine in my diff at all based in Keysborough. (GJV Automotive) He has a ebay store too, His username is Vicmelboz. He specialises in BW diffs You then need a speedo corrector behind the cluster If you have an auto then need to follow some instructions i posted on how to get the VSS to talk to the ECU to shift the trans properly https://www.fordforums.com.au/showthread.php?t=11464112
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XR6T 2002 BA
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#9 | |||
FF.Com.Au Hardcore
Join Date: Feb 2012
Location: Albury, NSW
Posts: 1,699
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Quote:
![]() Supposed to read "You'll find 3.73 gears behind 6 speed manual Turbo and V8 models, however the diffs in these are M86 and will not fit your housing." The longer first gear with 3.45 gears is a hoot rolling around town though ![]()
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2017 Ranger XLT 3.2L Hi-rider |
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#10 | ||
FF.Com.Au Hardcore
Join Date: Aug 2016
Posts: 820
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Yeh im running a turbo box with 3.23's
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#11 | ||
HSV - I just ate one!
Join Date: Dec 2004
Location: Middle of nowhere
Posts: 3,114
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fwiw, my BF series 1 XR8 6 speed manual had a 3.45 diff
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I dont care if some prius driving eco-hippy thinks its politically incorrect for me to drive a V8..... I'm paying for the fuel! |
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#12 | ||
Regular Member
Join Date: Nov 2016
Posts: 205
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Is changing just the centres to a higher ratio easily doable....like find a xr6 turbo grab the diff centre ,bolt her in an go do sum hectic donuts an burnouts...
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[B]WTB (Syd)...AU 5.0 or xr8 4 speed auto transmission in good working cond /B] |
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#13 | ||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Perth NoR
Posts: 5,970
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