T5 Five speed slant six 74 Dart Sport.

RustyRatRod said
Correct, and yet, when you tell people that, they still wanna curl up in a ball and get in their safe space. I have a 4.11 gear I just installed in my ford 9" slated to go under my 64 Valiant with a Ford T5 five speed. With the .68 OD ratio, I will have a 2.79 final drive ratio. My plans are to run a 245 60 14 rear tire so it will have some height to it as well. Should be really nice with the hot slant 6.
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Is there any guesstimate of speed (or high speed DURATION) limitation with the 4.11 axle gears whem the final drive is roughly 2.8? Is there a necessity for higher frequency interval for axle maintenance (like drain/fill gear oil intervals) or concerns for bearings? Thank you. Thanks for all of your help and effort. I hope that you and Kitty are doing well!