|
Info Please - Rear Axel Ratio
I'm a third owner of a MkIII SPF, Number 633, completed in 1999. I've looked over all my owner literature and cannot find what the standard or "default" rear-end ratio was for that series. The owner's manual says I have a Ford 8.8differential. The first owner installed the 351W and Tremec 3550. The SPF invoice does not give any info in this regard.
Stenhouse's gearing calculator indicates that the ratio could be any of seven, the lowest being 3.08 and the highest being 4.56. Any suggestions? Thanks. |
Stock, they came with 3.73's.
|
The switch from Ford to Dana rear ends occured about March 22, 2005 with chassis # 2068 . The Dana rear ends are a 3.46 ratio .
As Randy stated, your serial is within the Ford range and had a 3.73 ratio. Bill. |
Likely 3.73's as was said before, but, you can Jack the rear up, and while in neutral, spin the tires one revolution, and count the revolutions the driveshaft makes. That'll tell you the ratio.
|
It's a 3.73. If you have a Tremec 5 speed with a 0.68 OD there is too big a jump between 4th and 5th. I wish I had the 3.46 (or even a little taller gear) with a 0.80 OD.
Bob |
Thanks Guys
The popular wisdom seems to be a 3.73 rear end. This makes a lot of sense. Thanks to all that responded.
|
| All times are GMT -7. The time now is 09:58 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: