CobraKaz Posted April 17, 2010 Report Share Posted April 17, 2010 Anyone tried a set of 3.90,s in the rear end of these cars ? If so , how are they . Link to comment Share on other sites More sharing options...
CobraKaz Posted April 18, 2010 Author Report Share Posted April 18, 2010 Anyone tried a set of 3.90,s in the rear end of these cars ? If so , how are they . I guess they.re not too popular !!! Link to comment Share on other sites More sharing options...
bpmurr Posted April 18, 2010 Report Share Posted April 18, 2010 There really isn't much reason to move away from the 3.55s on these cars. 1st gear goes quick enough as it is. Link to comment Share on other sites More sharing options...
CobraKaz Posted April 19, 2010 Author Report Share Posted April 19, 2010 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. Link to comment Share on other sites More sharing options...
Spanky1965 Posted April 19, 2010 Report Share Posted April 19, 2010 I have 4:10 and highly recommend them...100% Link to comment Share on other sites More sharing options...
shel-b001 Posted April 19, 2010 Report Share Posted April 19, 2010 3:73s seem to be the most popular set , still allows you get to half decent gas mileage. 4:10s are not to great on the highway. , Link to comment Share on other sites More sharing options...
jsarkis Posted April 19, 2010 Report Share Posted April 19, 2010 I have 4:10 and highly recommend them...100% I couldn't imagine 4:10's with my limited traction as it is. Link to comment Share on other sites More sharing options...
CobraKaz Posted April 19, 2010 Author Report Share Posted April 19, 2010 3:73s seem to be the most popular set , still allows you get to half decent gas mileage. 4:10s are not to great on the highway. , 4.10,s with .50 overdrive shouldn,t be that bad . In my old 5 speed i think 65 mph was 2200 rpm Link to comment Share on other sites More sharing options...
Spanky1965 Posted April 19, 2010 Report Share Posted April 19, 2010 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 Link to comment Share on other sites More sharing options...
CobraKaz Posted April 19, 2010 Author Report Share Posted April 19, 2010 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 . Link to comment Share on other sites More sharing options...
Spanky1965 Posted April 19, 2010 Report Share Posted April 19, 2010 larger tire helps, and 1st gear is fun Link to comment Share on other sites More sharing options...
TX STIG Posted April 19, 2010 Report Share Posted April 19, 2010 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. +1 Link to comment Share on other sites More sharing options...
TX STIG Posted April 19, 2010 Report Share Posted April 19, 2010 3:73s seem to be the most popular set , still allows you get to half decent gas mileage. 4:10s are not to great on the highway. , Keep in mind the 2010's have a .5 ratio in 6th. No problems at all on the highway, even driving cross-country. Link to comment Share on other sites More sharing options...
bpmurr Posted April 20, 2010 Report Share Posted April 20, 2010 The 2006 Saleen Extreme I had came with 4.10s and a six speed manual. I'm pretty sure the same trans as in the GT500. First gear was non existent. Needless to say Saleen moved to 3.73's in later model years. Link to comment Share on other sites More sharing options...
FormerGmc Posted April 20, 2010 Report Share Posted April 20, 2010 Anyone tried a set of 3.90,s in the rear end of these cars ? If so , how are they . If they are Superior 3.90's, forget it. Noisey suckers! I tried em and ripped em out and replaced with 373's. Nice and quiet now. Link to comment Share on other sites More sharing options...
CobraKaz Posted April 20, 2010 Author Report Share Posted April 20, 2010 If they are Superior 3.90's, forget it. Noisey suckers! I tried em and ripped em out and replaced with 373's. Nice and quiet now. Other than the noise issue , how are they for driving ? Are they " managable" for street use . Link to comment Share on other sites More sharing options...
TX STIG Posted April 20, 2010 Report Share Posted April 20, 2010 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. Link to comment Share on other sites More sharing options...
Spanky1965 Posted April 20, 2010 Report Share Posted April 20, 2010 +1 :happy feet: Link to comment Share on other sites More sharing options...
CobraKaz Posted April 20, 2010 Author Report Share Posted April 20, 2010 +1 :happy feet: I really do want to try these but its hard for me to find anyone here that has 4.10 gears in one of these Cars , then , try andfind someone to install them thats not a 5 hr drive from here . Link to comment Share on other sites More sharing options...
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