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12-08-2014, 08:07 PM
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CC Member
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Join Date: Sep 2007
Cobra Make, Engine:
Posts: 7
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Not Ranked
Superformance Rear End Gear Ratio SPO#1508
I've had this car since it was new (2003) can someone tell me what the rear end gear ratio is?
I used the search feature for this forum and not sure if it's 3:45 or 3:73 as to which one came from the factory.
Any help would be appreciated.
Thanks in advance.
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12-08-2014, 08:49 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Well, I suppose if there is no tag on it, you could go old school and count rear wheel and drive line revolutions, then do the math. Or, contact Superformance and see what their records might tell you.
__________________
All that's stopping you now Son, is blind-raging fear.......
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12-09-2014, 02:49 AM
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CC Member
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Join Date: Jun 2010
Location: North of Toronto,
Ont
Cobra Make, Engine: Superformance #1950, Roush 402R, TKO600
Posts: 552
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Not Ranked
I would say you have 3:73 gear ratio
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12-09-2014, 05:28 AM
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CC Member
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Join Date: Sep 2007
Cobra Make, Engine:
Posts: 7
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Not Ranked
Thanks, Bernica-Sawdust. Doug Reed who I bought the car responded and it's 3:73.
Thanks Doug!
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12-10-2014, 06:26 PM
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CC Member
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Join Date: May 2008
Location: San Jose CA,
CA
Cobra Make, Engine: SPF_R_/BRG/FRBoss302/327CI/FordEFI/Under_Car_Exh/
Posts: 2,523
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Not Ranked
Easy way to tell - Ford Diff = 3.73 , Dana Diff = 3.46
__________________
Steve SPF 2734 MK3 / Brock Coupe #54- panavia.com
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12-10-2014, 06:44 PM
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CC Member
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Join Date: Sep 2007
Cobra Make, Engine:
Posts: 7
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Not Ranked
Thanks, much appreciated.
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12-10-2014, 06:44 PM
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CC Member
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Join Date: Aug 2007
Location: Carlsbad,
Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
Posts: 2,613
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Not Ranked
If you have the Dana 3.46, how hard is it to change to a 3.27?
__________________
Jim
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01-04-2015, 05:09 PM
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CC Member
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Join Date: Sep 2002
Location: Grand Rapids,
MI
Cobra Make, Engine: FFR Challenge Car, RDI aluminum 427w
Posts: 345
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Not Ranked
Hi, haven't been here in a long time.
Car 1508 is a Ford 8.8 and came with 3.73 gears. Easy to change and about $200 labor plus parts.
Newer cars with the Dana, the 44, I believe, have 3.46 gears and are much more difficult to change, more expensive too. Not sure if the change from 3.46 to 3.27s would be worth the trouble.
I have the 8.8 w/ 3.27s and another with the Dana and 3.46s, the differences in rpm/speed isn't that great. Where the differences come in is in the 8.8 I changed to a Torsen T2 and have whatever came from the factory in the Dana. I'd like to change the Dana to a T2 or TrueTrack.
Jim
SPF 1855 & 2584
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01-04-2015, 09:29 PM
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CC Member
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Join Date: Sep 2009
Location: Camarillo,
CA
Cobra Make, Engine: SPF #2608, Roush 427SR T-W
Posts: 911
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Not Ranked
And what were the differences with the Torsen T2?
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01-04-2015, 09:53 PM
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CC Member
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Join Date: Sep 2002
Location: Grand Rapids,
MI
Cobra Make, Engine: FFR Challenge Car, RDI aluminum 427w
Posts: 345
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Not Ranked
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01-05-2015, 04:19 AM
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CC Member
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Join Date: Jul 2010
Location: McMurray,
PA
Cobra Make, Engine: Superformance #522
Posts: 528
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Not Ranked
And no clutch packs to wear out on the Torsen T2. The T2R adds clutch packs.
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