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forwheeler forwheeler is offline
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Join Date: Oct 2007
Location: Idaho
Posts: 193
Originally Posted by DDDD View Post
My third gear is the factory third. The overall ring and pinion was just changed to the 8/41 from stock. I think you would have 9/38 ring and pinion stock....

I can tell you that my 3rd redlines at 115 or so and that is as short as you would ever want to go. I think 120 mph might be perfect for full acceleration.

Bruce anderson's 911 performance handbook has all the possible gear ratios and mph in the back.

Looking at the book a 26/26 gear at 6800 rpms gives 120 mph with a 9/38 ring and pinion. That would be devestating acceleration and just a touch taller than what I have. A 27/26 would put you at 126 mph and stock I think is about 134 mph at 6800 rpms. The 126 mph gear seems like a very nice compromise because your gear would not seem too short either.

You would want to double check those gears numbers yourself...

Yes, thanks for the info.
Old 11-16-2009, 10:46 AM
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