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08-31-2007, 01:20 PM
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CC Member
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Join Date: Jan 2007
Cobra Make, Engine:
Posts: 18
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Not Ranked
Superformance question
Can anybody tell me the chassis # when Superformance switched to the Holden rear axel rather than the Ford 8.8?
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08-31-2007, 02:38 PM
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CC Member
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Join Date: Feb 2006
Location: Scottsdale,
AZ
Cobra Make, Engine: Superformance, Roush 427R-095, Pro Systems carb, 2" headers, Buckshot Racefab side pipes, 10s off idle start
Posts: 705
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Not Ranked
I have the Ford 8.8, car 2040
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08-31-2007, 02:51 PM
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Senile Club Cobra Member
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Join Date: Feb 2001
Location: Buffalo, NY USA,
NY
Cobra Make, Engine: Superformance
Posts: 4,534
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Not Ranked
The diff is not a Holden per se, but a BTR HydraTrac that is also used by Holden as well as several other mfrs.
__________________
"I'm high all right, but on the real thing....powerful gasoline and a clean windshield..."
rick@autoventureusa.net
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08-31-2007, 09:25 PM
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CC Member
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Join Date: Nov 2006
Cobra Make, Engine: Superformance MIII, Roush 427
Posts: 320
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Not Ranked
I believe the change was around 2100. I have 2245 and have the BTR, it's held up...so far.
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09-01-2007, 04:50 AM
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Senior Club Cobra Member
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Join Date: Jan 2001
Location: Bloomfield Hills, (Detroit area),
Mi
Cobra Make, Engine: Superformance 156, ex Paxton 351, now a 392 Ford Racing Stroker
Posts: 1,666
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Not Ranked
change was made on chassis #2068 and thereafter . this occurred on or about March 22, 2005 . Bill
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09-01-2007, 10:30 AM
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CC Member
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Join Date: Jan 2007
Cobra Make, Engine:
Posts: 18
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Not Ranked
Quote:
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Originally Posted by Bill Wells
change was made on chassis #2068 and thereafter . this occurred on or about March 22, 2005 . Bill
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Thank you Bill. |
09-01-2007, 11:27 AM
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CC Member
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Join Date: Jan 2005
Location: Dana Point,
CA
Cobra Make, Engine: SPF #2056, 515 HP ROUSH 402R
Posts: 69
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Not Ranked
Dont Want To Sound Dumb But I Have #2056 With Ford 8.8. What's The Difference Between It And The Holden With Btr And Hydra Trak? What Are The Advantages Or Disadvantages Between Them?
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09-01-2007, 01:24 PM
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Club Cobra Member
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Join Date: Feb 2003
Location: Sterling,
IL
Cobra Make, Engine: SPF #1507 427 Dart Block Windsor
Posts: 1,192
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Not Ranked
I have no knowledge of the Holden diff: for all I know it could be a huge improvement over the 8.8, although one drawback seems to be the availability of aftermarket parts, such as R&P sets, posi units, etc.
One thing I did notice, though, when I looked around under one of the newer cars that was up on a lift, was that SPF has replaced the cup-type inner CV joints with a flat CV joint, similar to the ones we used on my upgraded axles. Since most of the SPF axle failures of which I'm aware have involved the splined shaft on the inner CV joint cup, switching to different (hopefully stronger) components here has been a step in the right direction.
Lowell
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09-01-2007, 02:00 PM
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CC Member
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Join Date: Feb 2006
Location: Scottsdale,
AZ
Cobra Make, Engine: Superformance, Roush 427R-095, Pro Systems carb, 2" headers, Buckshot Racefab side pipes, 10s off idle start
Posts: 705
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Not Ranked
Quote:
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Originally Posted by BRYCE
I Have #2056 With Ford 8.8. What's The Difference Between It And The Holden With Btr And Hydra Trak? What Are The Advantages Or Disadvantages Between Them?
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The gear ratio for the old type 8.8 is 3.73. The new is a 3.46. The newer units and half shafts are stronger.
I'd rather have a 3.73. |
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