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DDDD DDDD is offline
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Join Date: Jan 2007
Posts: 1,077
Quote:
Originally Posted by forwheeler View Post
Do you remember what ratio your 3rd is?
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...
Old 11-16-2009, 10:33 AM
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