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Rear End gears


CobraKaz
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There really isn't much reason to move away from the 3.55s on these cars. 1st gear goes quick enough as it is.

 

My 97 Cobra started with 3.27 ,s , then , with the SC came 3.73.s

then , after a few more years came 4.10,s .

Thats the gears those cars should have come wiith . I just wonder how different these cars are wth steeper gears.

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ok guys, first off I am running 305/45/20 Nittos that are 727 revs per mile compared to the original 775 rev tires, also with a .49 6th gear, 75mph is only 1800 rpm's...My only point is if you have stock 3;55 I would not spend the money for 3;73 but 4;10 are lots of fun, this is just my opinion

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ok guys, first off I am running 305/45/20 Nittos that are 727 revs per mile compared to the original 775 rev tires, also with a .49 6th gear, 75mph is only 1800 rpm's...My only point is if you have stock 3;55 I would not spend the money for 3;73 but 4;10 are lots of fun, this is just my opinion

 

Thats why i asked if anyone had gone to te 3.90.s . I have to admit i liked / LOVED the 4,10,s in the 97 Cobra but i just didn,t know how they would react with the extra torque of the Shelby . Looking at your rpm,s at 70 rpm , thats liveable . Is that due to the larger wheel with less rpm .

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Other than the noise issue , how are they for driving ? Are they " managable" for street use .

 

 

For me 4.10's seem ideal for the street, so I'm sure 3.90's are fine.

 

Keep in mind if you go with a taller tire, your ratio gets taller. Once my new wheels arrive I'll be running a 28.68" tire which will give me an effective ratio of 3.80. If I left my stock 3.55 gears in, then my effective ratio would be down around a 3.30.

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